Hubbry Logo
Minolta A-mount systemMinolta A-mount systemMain
Open search
Minolta A-mount system
Community hub
Minolta A-mount system
logo
8 pages, 0 posts
0 subscribers
Be the first to start a discussion here.
Be the first to start a discussion here.
Minolta A-mount system
Minolta A-mount system
from Wikipedia

The 2nd Generation Minolta A-mount
The lens side of the mount.

The Minolta A-mount camera system was a line of photographic equipment from Minolta introduced in 1985 with the world's first integrated autofocus system in the camera body with interchangeable lenses. The system used a lens mount called A-mount, with a flange focal distance 44.50 mm, one millimeter longer, 43.5 mm, than the previous SR mount from 1958. The new mount was wider, 49.7 mm vs. 44.97 mm, than the older SR-mount and due to the longer flange focal distance, old manual lenses were incompatible with the new system. Minolta bought the autofocus technology of Leica Correfot camera which was partly used on the a-mount autofocus technology.[1] The mount is now used by Sony, who bought the SLR camera division from Konica Minolta, Konica and Minolta having merged a few years before.

The Minolta A-mount system was at first marketed as Maxxum in North America and α (Alpha) in Japan and the rest of Asia. In Europe, early Minolta A-mount cameras were initially identified by a 4 digit number followed by AF. The name Dynax was introduced later with the "i" cameras, the second generation of Minolta A-mount camera.

It was originally based around a selection of three 35 mm single-lens reflex (SLR) bodies, the 5000, 7000 and 9000. The system also included an extensive range of auto-focus lenses, flashes, a motor drive and other accessories. Compatible equipment was made by a number of third parties. The mount itself was both electronically communicating with the lens as well as used a mechanical arm to control aperture and a screw-type drive to control focusing.

In the following years, many different cameras and accessories were added to the range.

The last film-based AF SLRs produced by Minolta were the Maxxum 50 (a.k.a. Dynax 30 and Dynax 40) and the Maxxum 70 (a.k.a. Dynax 60 and α-70). The Dynax/Maxxum/α branding was also used on two Konica Minolta digital SLRs, prior to the acquisition by Sony (7D, 5D).[2][3]

When Sony acquired Konica Minolta's camera technologies in 2006 they chose the "α" brand name (already in use by Minolta in Asia) for their new "Sony α" digital SLR system. The Dynax/Maxxum/α lens mount (which was retained from the old cameras) is now officially part of the "α mount system".[4]

Film SLR bodies

[edit]

Timeline

[edit]

First generation

[edit]

7000

[edit]

The Minolta 7000 was the first successful auto focus SLR using a motor integrated in the camera body. It was released in 1985 together with 11 lenses, 2 flashguns and a complete lineup of accessories. The 7000 featured one AF-sensor, shutter speeds of 1/2000 to 30 seconds, flash sync speed of 1/100s, exposure compensation of +/-4EV in 0.5 exposure steps, center-weighted light metering mode and two frames per second film advance.[5] The Maxxum 7000, when first released had the crossed x's in the name Maxxum. Exxon had a registered trademark for the crossed x's and sued Minolta, forcing Minolta to change the way the name was shown.

9000

[edit]

The Minolta 9000, a camera aimed at professionals, was released later the same year, and featured shutter speeds of 1/4000 to 30 seconds, center-weighted and spot lightmetering, exposure compensation of +-4EV in 0.5 exposure steps and a flash sync speed of 1/250s.[6] Unlike the 7000, the 9000 had no internal motordrive and thus holds the position as the world's only autofocusing SLR with manual winding, but with the addition of the motor drive MD-90 a photographer could get up to 5 frames per second. The 9000 had a very extensive range of accessories, including several different backs, winding options and screens. The 9000 had a unique function in that, if combined with the Minolta Data Receiver DR-1000 and the Minolta Flash Meter IV, readings could be made on the flash meter and transferred wirelessly to the camera, and the camera then triggered from the flash meter.

5000

[edit]

The Minolta 5000, Minolta's entry level camera and essentially a downscaled 7000, was released in 1986. It featured shutter speeds of 1/2000 to 4 seconds and BULB, center-weighted lightmetering, exposure compensation of +1EV, flashsync speed of 1/100s and fully automatic programs.

Second generation

[edit]

7000i

[edit]

This camera had the usual Program automatic exposure, Shutter priority automatic exposure, Aperture-priority automatic exposure and metered manual exposure modes (standard on the 7000), TTL autoflash (like the 7000) and added a newer faster and more sensitive AF system, faster film advance, new flash hot-shoe that was incompatible with the older flash system (although an adapter was available and the 7/8000i supported the x000-era CG-1000 "flash handle" for backwards compatibility). The 7000i supported the Maxxum lens system, and other previously introduced accessories such as the remote cords.[7]

Perhaps more innovative and unusual than any other improvement was the expansion card system. While also used in other models in the i-series, some models in the xi-series, and the 700si, the Minolta Creative Expansion Card System debuted on this model. The expansion card system provided a way to add features to the camera, such as multi-spot metering, or re-program the built-in AE modes to favor faster shutter speeds or smaller apertures, such as the sports action card. While most of the cards' functions and effects could be duplicated by a technically knowledgeable photographer using the camera without the expansion cards, the card system was handy for less technically skilled users who just wanted to photograph their child's soccer/football team for example, without needing to learn about exposure settings and the effect they might have on how a picture "looked". These cards were the forerunners of today's "picture/creativity modes". This camera was aimed at the same market as the 7000.

5000i

[edit]

Built-in flash with a zoom head, programmed AE and metered manual exposure out of the box, adding the A/S expansion card provided two additional AE modes, Shutter-priority and Aperture-priority. A fairly direct replacement for the earlier 5000.

8000i

[edit]

Essentially added a PC flash-sync terminal, ME capability, spot metering and faster shutter to the 7000i feature-set. This camera was not a direct replacement for the earlier 9000, and lacked some features such as depth-of-field preview, but offered some additional features that were not on the 7000i. This camera was available in white as well, together with matched white 35-105 lens and 5200i flash.

3000i

[edit]

An entry-level camera, exposure mode was program AE only, with a high-speed program option, no Creative Expansion Card support. An even more basic Maxxum, this camera was basically for the point-and-shoot user that wanted a system SLR camera with interchangeable lenses and more powerful flashes, but did not want the features on, or did not want to pay for the 5000i, 7000i, 8000i cameras.

Third generation

[edit]

2xi

[edit]

An entry-level model, the plastic-bodied 2xi features a program mode (P-mode), Shutter priority mode (S-mode), aperture priority mode (A-mode), and fully manual mode (M-mode). There is also a self-timer feature, a manual / auto focus switch for use with the series of auto focus lenses, hot shoe mount compatible with i and xi flashes, and a tripod mount.

3xi

[edit]

QTsi

[edit]

Introduced in 1999. Also known as the Dynax 303si. An entry-level, plastic-bodied camera manufactured in Malaysia. Key specifications:

  • Viewfinder: 90% field of view; 0.75X magnification
  • Shutter speeds 30 to 1/2000th sec.; flash sync: 1/90th (1/45th with wireless flash)
  • AF sensitivity range: EV -1 to 18 (ISO 100)
  • AF control: single-shot, continuous, automatic AF-mode selection
  • Exposure modes: P, five Subject Program modes (Portrait, Landscape, Close-up, Sports and Night Portrait)
  • Metering range: EV 4-20 (ISO 100, f/1.4 lens)
  • Film speed setting: Automatic: ISO 25 to 5000 using DX-coding; Flash: ISO 25-1000
  • Drive modes: single frame, continuous (1 frame/sec.), self timer
  • Built-in flash: GN 12 (ISO 100 in meters); 28mm angle of view; approx. 3 second recycling time
  • Batteries: two CR2 lithium cells
  • Dimensions: 135 x 90 x 58.5mm
  • Weight: 340g (w/o batteries)

GT

[edit]

5xi

[edit]
  • Type: 35 mm SLR with autofocus, autoexposure, built-in motor drive and flash.
  • Format: 24 × 35 mm cartridge film.
  • Lenses: Minolta AF, Minolta AFxi.
  • Lens mount: Minolta A-type bayonet mount.
  • Viewfinder: Eye-level pentaprism, 92% (vertical), 94% (horizontal) coverage.
  • Focusing screen: Acute-Matte, fixed.
  • Viewfinder information: Focus/spot metering frames, flash on/ready indicators; camera shake warning; focus signal; shutter speed and aperture LEDs; exposure compensation warning; spot metering indicator.
  • Metering system: 8-segment honeycomb metering, spot metering.
  • Exposure modes: Program AE with shift, aperture-priority, shutter-priority, metered manual.
  • Metering range: EV0-20 (honeycomb); EV3-20 (spot).
  • Film speed setting: DX coding, lSO 25-5000 in 1/3step increments. Non-DX coded film defaults to ISO 100.
  • Autofocus system: TTL phase-detection system with horizontal CCD array; activated by eye-start. Built-in (flash) AF illuminator, range 1–5 m.
  • Focus modes: Single shot, predictive; powered manual.
  • Shutter: Electronically controlled vertical-travel focal-plane type.
  • Shutter speeds: 1/2000s - 30sec, plus bulb in 1/2 stop increments.
  • Flash: Built-in retractable type, GN 14 (Metric, ISO 100). Flash activates automatically when needed in P mode, otherwise when popped up. Flash will only combine with external flash when used off-camera.
  • Flash synchronisation: 1/90s (P,A modes), 1/60s (S mode). Slow-shutter synch possible by pressing spot metering button.
  • Self-timer: Electronic, 10-second delay, cancellable. When raised, flash pulses as warning before shutter releases.
  • Film transport: Auto to first frame, single frame advance or continuous 1 fps. Auto rewind at end of roll (film wound right back into cassette).
  • Exposure compensation: +/- 4 stops in half stop increments.
  • Automatic exposure bracketing: Possible via EB Card.
  • Multiple exposure: Possible via ME Card.
  • Creative expansion cards: Travel, child, depth control, sports action, portrait, close-up, multiple exposure, exposure bracketing, flash bracketing.
  • Power source: 2CR5 6V lithium battery.
  • Dimensions: 153(W) × 99(H) × 69(D) mm.
  • Weight: 575 g (with battery, without lens).

7xi

[edit]
9xi

9xi

[edit]

The Minolta 9xi was the flagship of the xi series cameras. At its time, the fastest camera in the world; shortest shutter time 1/12000, 4,5 fps without an add on winder. Add on battery pack was available.

Fourth generation

[edit]

300si

[edit]

This camera is known by several names and variations, it features full automatic program, and 5 preset programs. Manual control is not an option. It has a prominent visible built in flash and was released in 1995, the ISO settings range 25-5000, the focal plane shutter speeds: 30 seconds - 1/2000. It is considered an entry-level camera because of the lack of manual, shutter, or aperture, priority capability.

350si

[edit]

A version of the 300si offering an additional panoramic mode with part of the viewfinder and film opening masked off top and bottom. This can be selected by a switch while there is film in the camera, so that a film may contain a mixture of normal and panoramic pictures. Sold as the Alpha 101si in Japan.[8]

400si/450si panorama date

[edit]

500si/550si panorama date

[edit]

The Minolta Dynax 500si (European name) was introduced in 1994. Budget version of Minolta Dynax 700si with built-in programs instead of program cards

505si/505si super

[edit]
Minolta 505si and its 35-70 f/3.5-4.5 kit lens




600si

[edit]

The Minolta 600si Classic (a.k.a. Maxxum 600si and α-507si), introduced in 1995, featured classic controls for most functions. This meant that the 600si had many dials and knobs rather than a menu system. The top plate of the camera included separate dials for exposure compensation, flash compensation, exposure mode and drive mode, and other functions were controlled by further knobs elsewhere. The advantage to the photographer was that almost all settings were readily identified even when the camera was not switched on - just like a classic camera.

The 600si did not have a P (panic) mode to reset all functions, nor was it possible to store favourite combinations of settings or use cards from the 700si card system. The 600si could be used with the VC-600 vertical control grip for a second set of controls and additional battery options.

650si

[edit]

The 650si was effectively a 600si with the addition of date/time imprinting and a built-in panorama mask, restricting the film image to 12 mm × 36 mm.

700si

[edit]

800si

[edit]
Minolta Maxxum 800si with VC-700 grip and 50 mm f/1.7 lens

The Minolta 800si, released in 1997, was the flagship of the si series cameras before the 5th generation single digit series. It can be seen as a stop-gap measure to fill the "semi-pro" niche between the 1993 700si and the 2000 Dynax 7. This camera has a very high powered pop-up flash, one of the most powerful built-in flashes ever made. The 800si added a lot more features over its predecessor the 700si, at the expense of the 700si's card system, which most consumers at this time considered of little use due to the widespread integration of features into camera bodies. The 700si's vertical control grip, the VC-700, can also fit the 800si.

Fifth generation

[edit]

9

[edit]

The Dynax/Maxxum/α-9, Minolta's last professional film body, was released in 1998 and started the 5th and final generation of their 35 mm autofocus camera line. The camera is constructed with a zinc and aluminium cast frame covered by SUS304 stainless steel panels, uncommon for cameras, and can tolerate large amounts of abuse at the expense of some added weight. A vertical control grip (VC-9) mirroring the cameras basic controls was available. The camera had a maximum shutter speed capability of 1/12000 second due to carbon-fiber reinforced shutter blades, and a maximum frame rate of 5.5 frames/second. The camera just preceded the release of the SSM (SuperSonic Motor) lenses and D distance encoded lens/flash system, and as a result an upgrade was available in order to support the SSM lenses and D function. This upgrade was in the form of a complete systems board, unlike digital cameras which are usually upgradeable by software. Like all autofocusing Minolta SLR cameras it used the Minolta 'A-series' bayonet lens mounting system.

The 9 was the first Minolta to use a radically different user layout, with many buttons, instead of the "computerized" interfaces tried earlier especially in the i and xi series. The more classic interface was first "tested" in a si series camera, the 600si Classic (which in essence was a 700si with a different interface) and garnered positive response. This interface was then refined and proved to be a major hit with consumers and reviewers alike, was largely copied over to the Konica Minolta Maxxum 7D, and also kept in later advanced amateur/professional Sony digital cameras. The vertical control grip was also the first to feature a slightly lowered handgrip and shutter button, for better ergonomy in vertical shooting. This style of grip has also been featured in later Minolta and Sony models.

Also a titanium version of this camera was available as the 9Ti. The 9Ti had the same features as its regular counterpart with the exception of the silver finish and lighter weight of the titanium shell, a "wet type" rubber grip, knobs with relief labels in orange color instead of the standard model's knobs with phosphorescent paint, and a brown leather shoulder strap. It also received four additional custom functions for a total of 25. A lighter magnesium vertical grip VC-9M was available as well. The camera came out in 1999 in limited quantities only and with 4-digit serial numbers. It was sold out in 2001 already. A small batch of Dynax 9Ti bodies with 8-digit serial numbers in the #199011xx range and lacking the accessories surfaced in Germany between 2002 and 2006 (presumably assembled by Minolta's European Service Center in Bremen from 9Ti spare parts), dubbed the Dynax 9Ti II to distinguish it from the original 4-digit limited series of the 9Ti.

In the second and third hardware revision of the 9, including all SSM/ADI upgraded units, a special procedure (requiring no tools) can be utilized to reconfigure the camera to behave like the 9Ti and subsequently invoke the limited model's extra functions also in the black model.[9][10][11][12]

7

[edit]
Dynax 7

The 7 is generally considered even more advanced in many respects than the Dynax/Maxxum/α-9, making it the most advanced Dynax/Maxxum/α. Amongst its many unusual features, it had an STF function which could emulate the Smooth Trans Focus effect by doing multiple exposures while varying the aperture — something done neither before nor since. The 7 was the first camera to support SSM lenses. Perhaps most noteworthy and radical was a huge LCD navigation display on the rear of the camera's film door. This offered a full operational view without the need of constant referral to the operating manual. It also eased operation of the 35 custom functions to change camera settings. Also, the 7 featured a plethora of dials and buttons as opposed to the "hold button while turning wheel" interface many of its other contemporaries offered. This interface was a direct evolution from the 9 and 600si Classic and later continued in other pro- and semi-pro models.

Rear LCD showing the current settings and exposure values measured before taking a picture

This Maxxum offered the maximum shutter speed of 1/8000, a maximum frame rate of 4 frames/second, autofocus control with a 16-bit CPU coupled with a 14-segment honeycomb-pattern metering and the support of Minolta's ADI (Advanced Distance Integration) with its "D" series lenses. Also for the professional–enthusiast was the vertical control grip (VC-7) that replicated some basic controls for vertical shooting and extending shooting time with extra batteries. There was also a film chamber lock to avoid accidental exposure of film that is still loaded. The Dynax/Maxxum/α-7 was noted to be a good camera among many photographers and rave reviews on the Internet and magazines alike.[citation needed]

In some markets a limited edition of the camera became available in 2001 as Dynax 7 Limited and α-7 Limited (there was no Maxxum variant of this model). It featured a larger internal film data memory, a slightly more refined finish of the exterior and golden-colored labels. Like the 9Ti it had 4-digit serial numbers, except for the Chinese α-7 Limited II model, which had 8-digit serial numbers. Also featuring a larger internal memory, there was a variant of the normal α-7 named α-7 CNM (Chinese navigation model) specifically for the Chinese market.

5

[edit]
Maxxum 5 with 28-80 mm lens

The 5 was an easy-to-use, compact, and feature-packed film camera using core technologies from the Minolta Dynax/Maxxum/α-7. The Dynax/Maxxum/α-5 incorporated advanced autofocus (AF) technology, powerful film drive, relatively fast shutter speeds, and several creative features including 14 custom functions, into a small and light silver-colored SLR camera body. Like all other autofocus Minolta cameras, it used the same lenses initially offered in the mid-1980s. Also available was a battery grip (BP-200) for extended 35 mm film shooting.

The Maxxum 3 and Maxxum 4 are based on this Minolta, being less feature-rich entry-level cameras. This fifth generation (Dynax/Maxxum/α-3/4/5, 7 & 9) were the last full generation of film cameras that Minolta made with only two more film cameras (Dynax 60, Maxxum/α-70 and Dynax 30/40, Maxxum/α-50) produced before merging with Konica and leaving the 35 mm camera business all together.

Sixth generation

[edit]

40/50

[edit]

First of two sixth generation Minolta film cameras marketed as the Dynax 40 in Europe and the Maxxum 50 in the USA. Entry level camera which took the crown as lightest and smallest AF 35 mm SLR.

60/70

[edit]

The last Minolta film camera, marketed as the Dynax 60 in Europe and the Maxxum 70 in the US. Essentially a Maxxum 5 with relatively minor changes (notably the addition of a PASM dial).[13]

Digital SLR bodies

[edit]

RD-175

[edit]

5D

[edit]

7D

[edit]

Lenses

[edit]

List of Minolta A-mount lenses:


Minolta A-mount lenses[a]
FL (mm) Ap Name MPN Lens ID Mount Filter Distance encoder[b] AF-D support Aberration correction Release date Comments
Prime lenses
Fisheye lenses
16 f/2.8 Minolta AF Fish-Eye 16mm f/2.8 (original revision) 2578-100,[14] 2578-600[14] 25781[15] 5-pin[14] Built-in (NORMAL, O56, FLW, B12)[14] No No No 1986 Fisheye lens; first 600 units used a different barrel construction internally;[14] optically similar to the Minolta MC Fish-Eye Rokkor 16mm f/2.8 (a.k.a. Leica Fisheye-Elmarit-R 16mm f/2.8) produced up to 1981 with an optical design originally introduced in 1966/1968.
Minolta AF Fish-Eye 16mm f/2.8 (later revision) 2578-110, 2578-610[16] 25781[15] 5-pin Built-in (NORMAL, O56, A12, B12) No No No ? Fisheye lens; same design as before except for different built-in filters; succeeded by Sony SAL-16F28
Wide-angle lenses
20 f/2.8 Minolta AF 20mm f/2.8 2579-100,[17] 2579-600,[17] 2579-610[16] 25791[15] 5-pin[17] 72mm[17] No No No 1986
Minolta AF 20mm f/2.8 New 2641-110 25791[15] 5-pin 72mm No No Camera 1993 Restyled design; succeeded by Sony SAL-20F28
24 f/2.8 Minolta AF 24mm f/2.8 2566-100,[18] 2566-110, 2566-600,[18] 2566-610[19] 25661[15] 5-pin[18] 55mm[18] No No No 1985-01[19]
Minolta AF 24mm f/2.8 New 2642-110 25661[15] 5-pin 55mm No No No 1994 Restyled design
28 f/2 Minolta AF 28mm f/2 2596-100,[20] 2596-600,[20] 2596-610[16] 25961[15] 5-pin[20] 55mm[20] No No No 1986
Minolta AF 28mm f/2 New 2668-118 25961[15] 5-pin 55mm No No No 1999 Restyled design
f/2.8 Minolta AF 28mm f/2.8 2557-100,[21] 2557-600[19][21] 25571[15] 5-pin[21] 49mm[21] No No Camera 1985-01[19] Succeeded by Sony SAL-28F28
35 f/1.4 Minolta AF 35mm f/1.4 2591-100,[22] 2591-110, 2591-600,[22] 2591-610[16] 25911[15] 5-pin[22] 55mm[22] No No No 1987
Minolta AF 35mm f/1.4 G New 2666-118 19 5-pin 55mm No No No 1998 Succeeded by Sony SAL-35F14G


Konica Minolta AF 35mm f/1.4 G (D) ? 43 8-pin 55mm Yes Camera (since 2013-02-05) Camera N/A (2005-07[23][24][25]) Prototype only; revised optics; succeeded by Sony SAL-35F14G


f/2 Minolta AF 35mm f/2 2597-100,[26] 2597-110, 2597-600,[26] 2597-610[16] 25971[15] 5-pin[26] 55mm[26] No No No 1987
Minolta AF 35mm f/2 New 2667-118 25971[15] 5-pin 55mm No No No 1999 Restyled design
Normal lenses
50 f/1.4 Minolta AF 50mm f/1.4 2562-100,[27] 2562-600[19][27] 25621[15] 5-pin[27] 49mm[27] No No No 1985-01[19] Also available as calibrated version in conjunction with Minolta CS-1000A spectroradiometer[28]

Minolta AF 50mm f/1.4 New 2662-110 25621[15] 5-pin 55mm No No No 1998 Restyled design; succeeded by Sony SAL-50F14
f/1.7 Minolta AF 50mm f/1.7 2550-100,[29] 2550-600[19][29] 25501[15] 5-pin[29] 49mm[29] No No No 1985-01[19] Original revision had metal focusing helicoid internally, while later revision was made of plastics[30]
Minolta AF 50mm f/1.7 New 2613-100, 2613-600 26131[15] 5-pin 49mm No No No 1990 Restyled design; revised optics
f/2.8 Minolta AF Macro 50mm f/2.8 2564-100,[31] 2564-600[19][31] 25641[15] 5-pin[31] 55mm[31] No No No 1985-01[19] 1:1 max.[31]
Minolta AF Macro 50mm f/2.8 New 2638-100 25641? 5-pin 55mm No No No 1993 1:1 max.; restyled design; also available as calibrated version in conjunction with Minolta CS-1000A spectroradiometer[28]
Minolta AF Macro 50mm f/2.8 (D) 2675-100 31[15] 8-pin 55mm Yes Camera (since 2013-02-05) Camera 2001 1:1 max.; succeeded by Sony SAL-50M28
f/3.5 Minolta AF Macro 50mm f/3.5 2646-100 9[15] 5-pin 55mm No No No 1995 1:2 max.
Short telephoto lenses
85 f/1.4 Minolta AF 85mm f/1.4 2592-100,[32] 2592-600,[32] 2592-610[16] 25921? 5-pin[32] 72mm[32] No No No 1987
Minolta AF 85mm f/1.4 G 2629-118 25921? or 27? 5-pin 72mm No No No 1993 Restyled design
Minolta AF 85mm f/1.4 G (D) 2677-118 27 8-pin 72mm Yes No No 2000 Restyled design
Minolta AF 85mm f/1.4 G (D) Limited 2689-118 35 8-pin 72mm Yes No No 2002-05[33] (2002-03[33]) Restyled design; revised optics; distributed in Japan only (700 units)[33]
100 f/2 Minolta AF 100mm f/2 2598-100,[34] 2598-110, 2598-600,[34] 2598-610[16] 25981[15] 5-pin[34] 55mm[34] No No No 1987
f/2.8 Minolta AF Macro 100mm f/2.8 2581-100,[35] 2581-600,[35] 2581-610[16] 25811[15] 5-pin[35] 55mm[35] No No No 1986 1:1 max.[35]
Minolta AF Macro 100mm f/2.8 New 2639-110 25811? 5-pin 55mm No No No 1993 1:1 max.; restyled design
Minolta AF Macro 100mm f/2.8 (D) 2676-110 28[15] 8-pin 55mm Yes Camera (since 2013-02-05) Camera 2000 1:1 max.; succeeded by Sony SAL-100M28
Minolta AF Soft Focus 100mm f/2.8 2648-118 12[15] 5-pin 55mm No No No 1994 Soft Focus lens
135 f/2.8 Minolta AF 135mm f/2.8 2556-100,[36] 2556-600[19][36] 25561[15] 5-pin[36] 55mm[36] No No No 1985-01[19]
Minolta STF 135mm f/2.8 [T4.5] 2656-118 20[15] 5-pin 72mm No No No 1999 Smooth Trans Focus; manual focus; aperture ring; succeeded by Sony SAL-135F28
Telephoto lenses
200 f/2.8 Minolta AF Apo Tele 200mm f/2.8 G[c] 2593-100,[37] 2593-600,[37] 2593-610[16] 25931 5-pin[37] 72mm[37] No No No 1986 Without "High Speed" gearing and sticker and without focus-stop button; white finish
Minolta AF Apo Tele 200mm f/2.8 G (High Speed upgrade)[c] Custom upgrade by Minolta service (based on 2593) 26121? 5-pin 72mm No No No 1988? With High Speed gearing, but without "High Speed" sticker and without focus-stop button; white finish
Minolta High Speed AF Apo Tele 200mm f/2.8 G New[c] 2612-110, 2612-610[38] 26121[15] 5-pin 72mm No No No 1988?, 1989-03[38] With "High Speed" label and focus-stop button; white finish
f/4 Minolta AF Apo Tele Macro 200mm f/4 G[c] 2658-118 23[15] 5-pin 72mm No No No 1999 1:1 max.; also available as calibrated version in conjunction with Minolta CS-1000T spectroradiometer[28]
300 f/2.8 Minolta AF Apo Tele 300mm f/2.8 G[c] (original revision) 2563-626[19] 25631 5-pin 114mm (front) / 42mm (slot-in) No No No 1985-01[19] 7-digit serial number; no CLR front filter; tripod knob to the right;[39] without "High Speed" gearing and sticker and without focus-stop buttons; optically based on an SR-mount Minolta MD Apo Tele Rokkor 300mm f/2.8 prototype;[40] white finish
Minolta AF Apo Tele 300mm f/2.8 G[c] (later revision) 2563-100, 2563-636[41] 25631 5-pin 114mm (front) / 42mm (slot-in) No No No 1986[41] 8-digit serial number; with CLR front filter; tripod knob to the left; without "High Speed" gearing and sticker and without focus-stop buttons; white finish
Minolta AF Apo Tele 300mm f/2.8 G (High Speed upgrade)[c] Custom upgrade by Minolta service (based on 2563) 26081? 5-pin 114mm (front) / 42mm (slot-in) No No No 1988? 8-digit serial number; with CLR front filter; tripod knob to the left; with "High Speed" gearing, but without "High Speed" sticker and without focus-stop buttons; white finish
Minolta High Speed AF Apo Tele 300mm f/2.8 G New[c] 2608-136, 2608-636[38] 26081[15] 5-pin 114mm (front) / 42mm (slot-in) No No No 1988?, 1989-03[38] 8-digit serial number; with CLR front filter; tripod knob to the left; with "High Speed" label and focus-stop buttons; white finish
Minolta AF Apo Tele 300mm f/2.8 G (D) SSM[c] 2674-118 32 8-pin None (front) / 42mm (slot-in) Yes Camera (since 2013-02-05) No 2003 (2002-03[33]) White finish; succeeded by Sony SAL-300F28G
f/4 Minolta High Speed AF Apo Tele 300mm f/4 G[c] 2640-128 11[15] 5-pin 82mm (front) / 42mm (slot-in) No No No 1994 White finish
400 f/4.5 Minolta High Speed AF Apo Tele 400mm f/4.5 G[c] 2651-116 15[15] 5-pin 95mm (front) / 42mm (slot-in) No No No 1995 White finish
500 f/8 Minolta AF Reflex 500mm f/8 2572-118, 2572-618[38] 25721 5-pin 82mm (front) / 28mm (slot-in) / 42mm (slot-in) No No No 1989-03[38] Catadioptric lens; succeeded by Sony SAL-500F80
600 f/4 Minolta AF Apo Tele 600mm f/4 G[c] 2565-100, 2565-626,[42] 2565-636[41] 25651 5-pin 154.5mm (front) / 42mm (slot-in) No No No 1985-08[42] Without "High Speed" gearing and label and without focus-stop buttons; white finish
Minolta AF Apo Tele 600mm f/4 G (High Speed upgrade)[c] Custom upgrade by Minolta service (based on 2565) 26091? 5-pin 154.5mm (front) / 42mm (slot-in) No No No 1988? With "High Speed" gearing, but without "High Speed" label and without focus-stop buttons; white finish
Minolta High Speed AF Apo Tele 600mm f/4 G New[c] 2609-136, 2609-636[38] 26091[15] 5-pin 154.5mm (front) / 42mm (slot-in) No No No 1988?, 1989-03[38] With "High Speed" label and with focus-stop buttons; white finish
Zoom lenses
Wide-angle and special purpose zoom lenses
3×–1× f/1.7–2.8 Minolta AF Macro Zoom 3×-1× f/1.7-2.8 2594-116, 2594-616 25941[15] 5-pin 46mm No No No 1990 3:1 max.; white finish; also available as calibrated version in conjunction with Minolta CS-1000S spectroradiometer[28]

11–18 f/4.5–5.6 Konica Minolta AF Zoom DT 11-18mm f/4.5-5.6 (D)[d] 2698-110 41 8-pin 77mm Yes No No 2005 Derivation of Tamron SP AF 11-18mm f/4.5-5.6 Di II LD Aspherical [IF] (model A13M) design; succeeded by Sony SAL-1118
17–35 f/2.8–4 Konica Minolta AF Zoom 17-35mm f/2.8-4 (D) 2695-110 38[15] 8-pin 77mm Yes No No 2004 Derivation of Tamron SP AF 17-35mm f/2.8-4 Di LD Aspherical [IF] (model A05M) design; black finish


f/3.5 Minolta AF Zoom 17-35mm f/3.5 G 2654-118 16 5-pin 77mm No No No 1997 Black finish
20–35 f/3.5–4.5 Minolta AF Zoom 20-35mm f/3.5-4.5 2657-118 17 5-pin 72mm No No No 1998
Wide to normal/tele zoom lenses
18–70 f/3.5–5.6 Konica Minolta AF Zoom DT 18-70mm f/3.5-5.6 (D)[d] 2697-810 40[15] 8-pin 55mm Yes No No 2005 Succeeded by Sony SAL-1870
18–200 f/3.5–6.3 Konica Minolta AF Zoom DT 18-200mm f/3.5-6.3 (D)[d] 2699-110 42 8-pin 62mm Yes No No 2005 Derivation of Tamron AF 18-200mm f/3.5-6.3 XR Di II LD Aspherical [IF] (model A14M) design; succeeded by Sony SAL-18200


24–50 f/4 Minolta AF Zoom 24-50mm f/4 2558-100,[43] 2558-110, 2558-600,[43] 2558-610[16] 25581[15] 5-pin[43] 55mm[43] No No No 1987 Black finish
Minolta AF Zoom 24-50mm f/4 New 2632-110 26321? 5-pin 55mm No No No 1992 Restyled design
24–85 f/3.5–4.5 Minolta AF Zoom 24-85mm f/3.5-4.5 2636-110 6? 5-pin 62mm No No No 1993 Also available as limited red-brown Urushi-lacquered Minolta AF Zoom 24-85mm f/3.5-4.5 Japan[15] variant
Minolta AF Zoom 24-85mm f/3.5-4.5 New 2660-110 6[15] 5-pin 62mm No No No 1997 Restyled design
24–105 f/3.5–4.5 Minolta AF Zoom 24-105mm f/3.5-4.5 (D) 2672-110 24[15] 8-pin 62mm Yes No No 2000 Succeeded by Sony SAL-24105
28–70 f/2.8 Minolta AF Zoom 28-70mm f/2.8 G 2620-118 2 5-pin 72mm No No No 1993 Black finish
Minolta AF Zoom 28-70mm f/2.8 G (D) SSM 2686-118 34? 8-pin 77mm Yes Yes No N/A (2002–03)[33] Prototype only, announced on 2002-03-19 and publicly shown up to 2004, but never released; black finish
28–75 f/2.8 Konica Minolta AF Zoom 28-75mm f/2.8 (D) 2696-810 39[15] 8-pin 67mm Yes No No 2004 Derivation of Tamron SP AF 28-75mm f/2.8 XR Di LD Aspherical [IF] Macro (model A09M) design; black finish; succeeded by Sony SAL-2875


28–80 f/3.5–5.6 Minolta AF Zoom 28-80mm f/3.5-5.6 2659-100,[44] 2659-110[44] 4? or 18? 5-pin ? No No No ?
Minolta AF Zoom 28-80mm f/3.5-5.6 II 2670-110,[44] 2670-150,[44] 2670-160[44] 18[15] 5-pin 62mm No No No 1987 Restyled design
Minolta AF Zoom 28-80mm f/3.5-5.6 (D) 2683-900,[44] 2683-910,[44] 2683-950,[44] 2683-960[44] 30 8-pin 55mm Yes No No 2001 Restyled design; black or silver finish
f/4–5.6 Minolta AF Zoom xi 28-80mm f/4-5.6 2618-110 26181[15] 8-pin 55mm No No No 1991 Black finish
Minolta AF Macro Zoom 28-80mm f/4-5.6 New 2633-100,[44][45] 2633-110 3[15] 5-pin 55mm[45] No No No 1993 Black finish
28–85 f/3.5–4.5 Minolta AF Macro Zoom 28-85mm f/3.5-4.5 2552-100,[46] 2552-600,[46] 2552-610[19] 25521[15] 5-pin[46] 55mm[46] No No No 1985-01[19]
Minolta AF Macro Zoom 28-85mm f/3.5-4.5 New 2586-110, 2586-610 0[15] 5-pin 55mm No No No 1992 Restyled design
28–100 f/3.5–5.6 Minolta AF Zoom 28-100mm f/3.5-5.6 (D) 2692-810, 2692-860 36[15] 8-pin 55mm Yes No No 2003 Black or silver finish
28–105 f/3.5–4.5 Minolta AF Zoom xi 28-105mm f/3.5-4.5 2615-110 26151? 8-pin 62mm No No No 1991 Black finish
Minolta AF Zoom 28-105mm f/3.5-4.5 2635-110 10[15] 5-pin 62mm No No No 1994 Restyled design
Minolta AF Zoom 28-105mm f/3.5-4.5 New 2661-110 10? 5-pin 62mm No No No 1997 Restyled design
28–135 f/4–4.5 Minolta AF Macro Zoom 28-135mm f/4-4.5 2553-100,[47] 2553-600[19][47] 25531[15] 5-pin[47] 72mm[47] No No No 1985-01[19] Black finish
35–70 f/3.5–4.5 Minolta AF Zoom 35-70mm f/3.5-4.5 2643-100 5? 5-pin 49mm No No No 1993 Black finish; has focusing scale window
Minolta AF Zoom 35-70mm f/3.5-4.5 II? / New? 2652-100 5? 5-pin 49mm No No No ? Black finish; has no focusing scale
f/4 Minolta AF Macro Zoom 35-70mm f/4 2551-100,[48] 2551-600,[48] 2551-610[19] 25511[15] 5-pin 49mm No No No 1985-01[19] Black finish
35–80 f/4–5.6 Minolta AF Zoom 35-80mm f/4-5.6 2605-100,[49] 2605-110, 2605-600[49][50] 26071[15] 5-pin[49] 46mm[49] No No No 1988-10[50]
Minolta AF Power Zoom 35-80mm f/4-5.6 2624-110 26241[15] 8-pin 49mm No No No 1991 Restyled design; black finish
Minolta AF Zoom 35-80mm f/4-5.6 II 2671-110, 2671-160 22 5-pin 49mm No No No 1999 Restyled design
35–105 f/3.5–4.5 Minolta AF Macro Zoom 35-105mm f/3.5-4.5 2554-100,[51] 2554-600,[51] 2554-610[19] 25541[15] 5-pin[51] 55mm[51] No No No 1985-01[19]
Minolta AF Zoom 35-105mm f/3.5-4.5 New 2585-100,[52] 2585-600,[52] 2585-610[50] 25858[15] 5-pin[52] 55mm[52] No No No 1988-10[50] Restyled design; white finish version available as Minolta AF Zoom 35-105mm f/3.5-4.5 Prestige (2585-110?)[15]
35–200 f/4.5–5.6 Minolta AF Zoom xi 35-200mm f/4.5-5.6 2616-110, 2616-610 26161? 8-pin 62mm No No No 1991 Black finish
Telephoto zoom lenses
70–200 f/2.8 Minolta AF Apo Tele Zoom 70-200mm f/2.8 G (D) SSM[c] 2682-118 33[15] 8-pin 77mm Yes No No 2003 (2002-03[33]) White finish; succeeded by Sony SAL-70200G
70–210 f/3.5–4.5 Minolta AF Zoom 70-210mm f/3.5-4.5 2588-100,[53] 2588-600,[53] 2588-610, (2588-810)[50] 25881? 5-pin[53] 55mm[53] No No No 1988-10[50]
f/4 Minolta AF Zoom 70-210mm f/4 2555-100,[54] 2555-110, 2555-600,[54] 2555-610[19] 25551[15] 5-pin[54] 55mm[54] No No No 1985-01[19] Optically based on the Minolta MD Zoom 70-210mm f/4 (a.k.a. Leica Vario-Elmar-R 70-210mm f/4); black finish, also available as "dealer demo" in transparent housing[15]
f/4.5–5.6 Minolta AF Zoom 70-210mm f/4.5-5.6 (New?) 2634-110 8[15] 5-pin 49mm No No No 1993
Minolta AF Zoom 70-210mm f/4.5-5.6 II 2669-110, 2669-160 8? 5-pin 49mm No No No 1999
75–300 f/4.5–5.6 Minolta AF Zoom 75-300mm f/4.5-5.6 2561-100,[55] 2561-110, 2561-600,[55] 2561-610[42] 25611[15] 5-pin[55] 55mm[55] No No No 1985-08[42] Black finish
Minolta AF Zoom 75-300mm f/4.5-5.6 New 2649-110 13? 5-pin 55mm No No No 1996 Black finish
Minolta AF Zoom 75-300mm f/4.5-5.6 II 2665-110, 2665-160 13? 5-pin 55mm No No No 1999 Black or silver finish
Minolta AF Zoom 75-300mm f/4.5-5.6 (D) 2684-910, 2684-960 29 8-pin 55mm Yes No No 2001 Black or silver finish; succeeded by Sony SAL-75300
80–200 f/2.8 Minolta AF Apo Tele Zoom 80-200mm f/2.8 G[c] 2589-100,[56] 2589-600,[56] 2589-610[16] 25891[15] 5-pin[56] 72mm[56] No No No 1987 Black finish
Minolta High Speed AF Apo Tele Zoom 80-200mm f/2.8 G[c] (New?) 2628-118 1 5-pin 72mm No No No 1993 White finish
f/4.5–5.6 Minolta AF Zoom 80-200mm f/4.5-5.6 2604-100,[57] 2604-600[50][57] 26041? 5-pin[57] 46mm[57] No No No 1988-10[50] Black finish
Minolta AF Zoom xi 80-200mm f/4.5-5.6 2619-110, 2619-610 26191? 8-pin 55mm No No No 1991 Black finish
100–200 f/4.5 Minolta AF Zoom 100-200mm f/4.5 2560-100,[58] 2560-600,[58] 2560-610,[16] 2560-611[41] 25601 5-pin[58] 49mm[58] No No No 1986[41] Black finish
100–300 f/4.5–5.6 Minolta AF Zoom 100-300mm f/4.5-5.6 2606-100,[59] 2606-110, 2606-600,[59] 2606-610[50] 26061? 5-pin[59] 55mm[59] No No No 1988-10[50] Black finish
Minolta AF Zoom xi 100-300mm f/4.5-5.6 2621-110 26211? 8-pin 55mm No No No 1991 Black finish
Minolta AF Apo Tele Zoom 100-300mm f/4.5-5.6[c] 2631-? 7[15] 5-pin 55mm No No No 1993? Black finish; smooth rubber focus ring
Minolta AF Apo Tele Zoom 100-300mm f/4.5-5.6 New[c] 2631-110? 7? 5-pin 55mm No No No 1995? Black finish; ribbed focus ring
Minolta AF Apo Tele Zoom 100-300mm f/4.5-5.6 (D)[c] 2681-110 25[15] 8-pin 55mm Yes No No 2000 Black finish
100–400 f/4.5–6.7 Minolta AF Apo Tele Zoom 100-400mm f/4.5-6.7[c] 2644-110 14[15] 5-pin 72mm No No No 1995 Black finish
Teleconverters
1.4× 1.4× Minolta AF 1.4× Tele Converter Apo 2590-100, 2590-600, 2590-607[16] 25901[15] 5-pin N/A No No No 1986 Not recommended for lenses with "High Speed" gearing; white finish
Minolta AF 1.4× Tele Converter Apo-II 2610-107, 2610-607[38] Lens ID of mounted lens or 65535 (no lens)[15] 5-pin N/A No No ? 1988?, 1989-03[38] White finish
Minolta AF 1.4× Tele Converter Apo (D) 2687-107 Lens ID of mounted lens or 65535 (no lens)[15] 8-pin N/A Yes No ? 2003 (2002-03[33]) Recommended for SSM/ADI; white finish; succeeded by Sony SAL-14TC
Minolta AF 2× Tele Converter Apo 2601-100, 2601-600, 2601-607[16] 26011[15] 5-pin N/A No No No 1987 Not recommended for lenses with "High Speed" gearing; white finish
Minolta AF 2× Tele Converter Apo-II 2611-107, 2611-607[38] Lens ID of mounted lens or 65535 (no lens)[15] 5-pin N/A No No ? 1988?, 1989-03[38] White finish
Minolta AF 2× Tele Converter Apo (D) 2688-107 Lens ID of mounted lens or 65535 (no lens)[15] 8-pin N/A Yes No ? 2003 (2002-03[33]) Recommended for SSM/ADI; white finish; succeeded by Sony SAL-20TC
Minolta AF 2× M/A Converter-S 2583-107[42] 65535[15] (no chip) 0-pin N/A No No No 1985-08[42] For use of SR-mount lenses shorter than 300mm on A-mount bodies; black finish; optically identical to Minolta MD 2× Tele Converter 300-S
Minolta AF 2× M/A Converter-L 2584-107,[41] (2583-207)[42] 65535[15] (no chip) 0-pin N/A No No No 1985-08[42] For use of SR-mount lenses longer than 300mm on A-mount bodies; black finish; optically identical to Minolta MD 2× Tele Converter 300-L
Special purpose lenses
50 f/1.7 Minolta AF Master Lens 50mm f/1.7 2072-0006-75 25501? 5-pin 49mm No No No 1985 Specially calibrated lens with fixed focus and fixed aperture for camera service; optics based on Minolta AF 50mm f/1.7 (2550-100, 2550-600); cannot be used for normal photography; black finish
Notes
  1. ^ All lenses are designed cover the 35mm format with the exception of the "DT" lenses (11–18, 18–70 and 18–200), which cover APS-C.
  2. ^ Lenses with a "distance encoder" provide subject distance information for utilization in the Advanced Distance Integration (ADI) flash mode and other features. While the "(D)" designation is used on the box and in the documentation, the lenses just feature a "D" instead. Requires 8 lens contacts; lenses with only 5 contacts cannot support this feature.
  3. ^ a b c d e f g h i j k l m n o p q r s t u Design includes apochromatic lens element(s)
  4. ^ a b c DT is "Digital Technology", lenses for cameras with APS-C (or Super-35mm) size sensors, only. DT lenses will not fully illuminate the sensor/film area of 24×36mm full-frame cameras. Three DT lenses were made and sold by Konica Minolta: 11–18, 18–70, and 18–200mm.
Notes and nomenclature
Apo Apochromatic lens element(s)
(D) or D "Distance encoder", lens provides subject distance information for utilization in the Advanced Distance Integration (ADI) flash mode and other features. While the "(D)" designation is used on the box and in the documentation, the lenses just feature a "D" instead. Requires 8 lens contacts; lenses with only 5 contacts cannot support this feature.
DT "Digital Technology", lenses for cameras with APS-C (or Super-35mm) size sensors, only. DT lenses will not fully illuminate the sensor/film area of 24×36mm full-frame cameras. Three DT lenses were made and sold by Konica Minolta: 11–18, 18–70, and 18–200mm.
G "Gold" series, Minolta's line-up of high-grade lenses. The "G" status does not occur as label on the lenses, but is indicated by a decorating ring on the lens.
High Speed High Speed upgraded gearing for faster autofocus. As indicated, three lenses were upgradeable in authorized service centers as well.
II Version II. Some lenses underwent more than just cosmetic changes, and are referred to as second version, in particular, when the optics have changed completely.
New Restyled (not a designation found on the lens), aesthetic changes (such lenses were labelled "New" or "Neu" or "(N)" on the box and in the documentation by Minolta, but not specifically labelled on the lens itself).
SSM "SuperSonic Motor", silent in-lens ultrasonic motor used on some lenses. Requires 8 lens contacts; lenses with only 5 contacts cannot support this feature. Can be used with manual focusing on cameras without SSM support (that is, Minolta film bodies released before 2000 - Minolta Dynax/Maxxum/α-9/9Ti can be upgraded by service).[60][61][62][63]
Power or xi Motorized zoom. Requires 8 lens contacts; lenses with only 5 contacts cannot support this feature.


Third-party lenses

[edit]

See also

[edit]

References

[edit]
[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia
from Grokipedia
The A-mount system is a bayonet lens mount and associated line of single-lens reflex (SLR) cameras, lenses, and accessories developed by Corporation, introduced in 1985 as the world's first production SLR system with integrated in-body motor and motorized advance. The system revolutionized 35mm photography by combining phase-detection , through-the-lens (TTL) metering, and automatic exposure control within a compact design, debuting with the Maxxum 7000 (also known as Dynax 7000 in and Alpha 7000 in ). Key technical specifications of the A-mount include a throat diameter of 49.7 mm and a flange focal distance of 44.5 mm, which provided sufficient clearance for the swinging mirror in SLR bodies while enabling compatibility with a wide range of focal lengths and apertures. This mount succeeded Minolta's earlier manual-focus SR mount (introduced in 1958 with a 43.5 mm flange distance), which had been in use for 27 years, and incorporated electrical contacts for autofocus communication, aperture control, and predictive focusing capabilities. Over its evolution, the system supported both film and digital formats, with early digital innovations including the experimental RD-175 (1995) and RD-3000 (1999) DSLRs, followed by the production Maxxum 7D in 2004—the first consumer digital SLR using the A-mount. Notable advancements encompassed wireless flash triggering in the early 1990s, the intuitive user interface of the Maxxum 7 (2000), and in-body image stabilization (branded as Anti-Shake) introduced in 2003. Following Minolta's merger with Konica in 2003 to form Konica Minolta and the company's subsequent exit from the camera business in 2006, Sony Corporation acquired the A-mount assets and rebranded the system as Sony Alpha, launching the Alpha 100 DSLR that year as its first digital camera. Sony expanded the lineup with professional models like the Alpha 900 (2008, full-frame) and single-lens translucent (SLT) designs such as the Alpha 55 (2010), which used a fixed translucent mirror for continuous autofocus during video and burst shooting. The system amassed over 40 Minolta-designed lenses by the mid-2000s, with Sony adding more, including teleconverters and zooms, while maintaining backward compatibility. Despite its longevity—spanning more than three decades—the A-mount's prominence waned as shifted focus to the shorter-flange E-mount for mirrorless cameras starting in , introducing adapters for A-mount lens use on E-mount bodies. By the early , quietly discontinued new A-mount body development, with the Alpha 99 II (2016) as the final model, though legacy support persists via adapters and third-party lenses. The system's legacy endures in its pioneering role in technology and as a bridge between film-era SLRs and modern .

System Overview

Technical specifications

The A-mount is a bayonet-style lens mount characterized by an inner of 49.7 mm and a of 44.50 mm, enabling compatibility with 35 mm full-frame sensors and an of 43.27 mm diagonal to fully illuminate the format. This design provides sufficient clearance for the camera's reflex mirror while maintaining a relatively compact profile compared to contemporary mounts like Canon's EF (54 mm ). The mount's geometry supports seamless integration of mechanisms and through-the-lens (TTL) metering, allowing lenses to function without mechanical modifications for exposure control. The A-mount is also compatible with APS-C format sensors measuring 23.5 mm × 15.6 mm, yielding a of approximately 1.5× that narrows the field of view relative to full-frame equivalents. This adaptability extends the system's utility into , where the same lenses can project a reduced onto smaller sensors without significant in most cases. Electrical contacts on the A-mount facilitate bidirectional communication between camera and lens for , adjustment, and exposure data. The initial configuration, introduced in 1985, featured 5 pins dedicated to autofocus signaling via screw-drive mechanism (in-body motor) and electromagnetic diaphragm control for . This evolved to an 8-pin arrangement around 1991 with the xi-series, incorporating additional contacts to power and control in-lens zoom motors, enhancing automation for power zoom lenses. Subsequent updates included distance-encoding capabilities on later pins, enabling precise subject distance data transmission for advanced metering and flash exposure compensation (ADI). Lens communication protocols support multiple autofocus motor types: traditional screw-drive systems driven by the camera body, Sony's SSM (Supersonic wave Motor) for ultrasonic in-lens focusing introduced in 2006, and Minolta's SAM (Super Sonicwave AF Motor) for in-lens motors powered via body signals. Aperture control relies on an electromagnetic diaphragm mechanism, allowing stepless adjustments synchronized with shutter release for consistent exposure across varying focal lengths. A key innovation of the A-mount was its optimization as the first SLR lens mount to integrate in-body with TTL metering, eliminating the need for lens-specific mechanical linkages and enabling a unified ecosystem for automated .

Historical development

Minolta's journey toward the A-mount system began in the manual focus era with the introduction of the SR mount in , alongside the SR-2, its first interchangeable-lens 35mm SLR camera. This mount evolved through the MC series in 1966, which incorporated meter coupling prongs for through-the-lens (TTL) metering compatibility, and further to the MD series in with the XD-11 body, adding a for minimum indexing to enable open-aperture metering and multi-mode exposure controls including program, aperture-priority, and shutter-priority. These advancements addressed growing demands for automated exposure but highlighted limitations in integrating , as the mechanical design lacked electrical contacts for lens-camera communication, restricting potential for in-body AF motors and data exchange. The A-mount system debuted in 1985 with the Maxxum 7000 (known as Dynax 7000 in Europe and Alpha 7000 in ), marking the world's first production 35mm SLR with integrated , motorized film transport, and TTL phase-detection focusing. This , with a 44.5 mm and five electrical pins for bidirectional data transfer between lens and body, enabled pioneering features like lens-based control and predictive AF tracking. The system's launch disrupted the industry, offering mass-market accessibility to automated while maintaining compatibility with adapted manual lenses. Throughout the late and , expanded the A-mount ecosystem with successive body generations, incorporating enhanced program modes in models like the Maxxum 8000i for greater exposure flexibility. The xi-series, including the Maxxum 7000i and 9000i, introduced motorized power zoom lenses and algorithms for scene analysis, while the 1993 si-series, such as the Maxxum 700si, added creative subject-program modes for portraits, landscapes, and action. In 2003, merged with to form , consolidating resources amid intensifying digital competition. Key technological milestones included the 2000 introduction of Advanced Distance Integration (ADI) flash metering, which combined lens distance data with pre-flash exposure for more accurate fill lighting in varied conditions, debuting with the Maxxum 7 and flashes such as the Program Flash 2500D. Distance encoding arrived in 2000 via "D" lenses, enhancing low-light performance and enabling matrix metering in manual focus modes through an additional ROM chip. Early digital integration came with prototypes like the RD-175 in 1995, a 1.75-megapixel DSLR adapting the A-mount for three-CCD imaging. 's decline accelerated in the early due to sluggish adaptation to consumer digital SLRs; following the merger, the company exited camera production in 2006, selling its imaging assets to .

Film SLR Bodies

Timeline of film SLR bodies

The Minolta A-mount system debuted in 1985 with the launch of the first generation of film SLR bodies, revolutionizing 35mm through integrated and motorized film transport. The initial models, including the Maxxum 7000, 9000, and 5000, established the foundation for a modular system that emphasized while maintaining compatibility with a growing lineup of dedicated A-mount lenses. From 1988 to 1990, i-series expanded accessibility with updated electronics and improved performance, featuring models such as the 7000i, 5000i, 8000i, and 3000i. These bodies refined predictive and added data imprinting capabilities, bridging entry-level and professional needs. The third generation xi-series, released between 1990 and 1993, introduced creative dials and variable-program modes in models like the 2xi, 3xi, QTsi, GT, 5xi, 7xi, and 9xi. This era marked a shift toward user-configurable controls, though some designs faced criticism for complexity. In 1993–1996, the fourth generation si-series proliferated with ergonomic enhancements and panorama capabilities across a broad range, including the 300si, 350si, 400si/450si, 500si/550si, 505si, 600si, 650si, 700si, and 800si. These models emphasized intuitive interfaces and award-winning designs, such as the 700si's multiple accolades for . The 505si Super arrived later in 1998 as an updated variant. The fifth generation high-end analogs arrived in 1998–2001, focusing on professional-grade magnesium alloy construction and advanced metering in the streamlined models 9, 7, 5, and the 505si Super. The Maxxum 9, launched in 1998, offered 10 fps burst rates and weather sealing, while the 7 in 2000 and 5 in 2001 added innovative displays and depth-of-field previews. Finally, from 2001 to 2004, the sixth generation compacts—such as the 40, 50, and 70—emerged under the banner, prioritizing lightweight portability and eye-start as the company transitioned toward digital. The Maxxum 70, released in 2004, served as the last film body in the lineup.
GenerationYearsKey Models
First1985–19887000, 9000, 5000
Second (i-series)1988–19907000i, 5000i, 8000i, 3000i
Third (xi-series)1990–19932xi, 3xi, QTsi, GT, 5xi, 7xi, 9xi
Fourth (si-series)1993–1996300si, 350si, 400si/450si, 500si/550si, 505si, 600si, 650si, 700si, 800si
Fifth1998–20019, 7, 5, 505si Super
Sixth2001–200440, 50, 70
Over the two decades of SLR development, the A-mount bodies evolved from basic point-and-shoot automation in the to sophisticated systems offering advanced creative controls, such as customizable exposure programs and motorized drives, reflecting Minolta's emphasis on innovation amid rising digital competition.

First generation bodies (1985–1988)

The first generation of A-mount bodies, released from 1985 to 1988, introduced the world's first mass-produced 35mm single-lens reflex cameras with integrated in-body motors, revolutionizing SLR design by combining point-and-shoot simplicity with professional-level automation. These models utilized the new A-mount with screw-drive AF actuation and basic electrical contacts for lens-body communication, featuring lightweight plastic construction to enhance accessibility and portability. All shared a TTL phase-detection system with a single central focus point, operational from EV 2 to EV 19 at ISO 100, and center-weighted averaging metering via silicon photocells for reliable exposure in varied lighting. However, they lacked advanced features like multi-segment metering or shutter-priority modes in entry-level variants, emphasizing affordability over extensive manual overrides. The Maxxum 7000, launched in February 1985, served as the flagship consumer model and the system's pioneer, earning the European Camera of the Year award from EISA for its innovative automation. It featured a vertically traveling metal with speeds from 30 seconds to 1/2000 second (stepless in auto modes), supporting DX-coded films from ISO 25 to 6400 with automatic sensitivity detection. Exposure control was limited to a fixed program mode optimized for general use, paired with motorized film advance at up to 2 frames per second and TTL off-the-film flash metering at 1/100-second sync. The camera's ergonomic design, with LCD data panels and push-button controls, made it a point-and-shoot SLR accessible to amateurs, though its plastic body weighed just 550 grams without batteries. As the professional counterpart, the Maxxum 9000 debuted alongside the 7000 in , offering expanded creative flexibility with manual, aperture-priority, and program modes to accommodate demanding workflows. Its titanium-honeycomb shutter enabled speeds up to 1/4000 second (with 1/250-second high-speed flash sync), and an optional pack allowed continuous shooting at 5 frames per second. ISO sensitivity ranged from 6 to 6400, with spot metering (covering 2.7% of the frame) for precise highlight, shadow, or midtone readings, and the robust stainless-steel weighed 645 grams. This model prioritized durability and speed, including continuous AF tracking during panning, setting a benchmark for pro-grade A-mount bodies. The entry-level Minolta Maxxum 5000, introduced in , streamlined controls for beginners while retaining core A-mount compatibility, focusing on program and manual exposure modes without advanced priorities. Its electronic covered 1/2000 second to 4 seconds (plus bulb), with the same ISO 25–6400 auto-DX range and basic one-point AF as its siblings, but simplified metering and no built-in for cost efficiency at around 400 grams. These bodies collectively laid the foundation for the A-mount ecosystem, powering early AF lenses via in-body screw-drive motors and four-pin contacts for and focus data exchange, though their plastic builds prioritized mass-market appeal over weather sealing.

Second generation bodies (1988–1990)

The second generation of A-mount film SLR bodies, known as the i-series, marked a significant evolution in the system's automation by incorporating enhanced between camera and lens via five electrical contacts in the mount, enabling features like program shift for greater exposure flexibility. Released between 1988 and 1990, these models addressed limitations in the prior generation's rigid programming by introducing user-customizable modes and refined metering systems that better managed varied lighting conditions. The lineup catered to a range of users, from enthusiasts to beginners, while maintaining compatibility with existing A-mount lenses. The 7000i, launched in 1988, served as the flagship update to the original 7000, featuring five-pin lens contacts that supported program shift in aperture-priority and shutter-priority modes, allowing photographers to adjust exposure balance while retaining automatic metering. It incorporated a 6-segment metering system for improved evaluation of scene contrast and , alongside a offering speeds from 30 seconds to 1/4000 second. Custom functions, such as film leader retraction control and intervals, were accessible via optional Creative Expansion Cards inserted into a dedicated slot, providing personalization without built-in menu systems. Weighing 590 grams and powered by a single 2CR5 lithium battery, the 7000i emphasized ergonomic improvements like dedicated control buttons for faster operation. The 5000i, introduced in 1988, offered a simplified entry into the i-series with a lighter 500-gram body and basic PASM exposure modes, though shutter-priority and aperture-priority required expansion cards for full functionality. Its 1/2000-second top and two-segment metering prioritized ease of use for casual photographers, while a single-line sensor ensured reliable performance in good light, with a maximum of 1 fps. This model streamlined the interface by reducing buttons compared to the 7000i, focusing on automatic program exposure as the default for beginners. In 1989, the 8000i emerged as a option with advanced spot metering covering 4% of the frame for precise exposure in high-contrast scenes, complementing its standard 6-segment and center-weighted modes to handle broader dynamic ranges effectively. Equipped with an electronic shutter capable of 1/8000-second speeds and a faster 1/200-second X-sync for flash, it supported optional data backs like the PB-7 for imprinting exposure details on . The 8000i retained the five-pin contacts for program shift and three-line sensors, weighing just 400 grams for portability, and included a white limited-edition variant for aesthetic appeal. The 3000i, released in 1990 as the budget-oriented model, featured basic with a single-line sensor and two-segment metering, omitting advanced options like spot metering or expansion card support to keep costs low at around $200 upon launch. Its program and high-speed sync modes, combined with a 1/1000-second shutter and 420-gram body, targeted novice users seeking an affordable entry to A-mount without the complexities of higher models. Lacking eye-start activation, it relied on shutter button half-press for metering and focusing initiation. Key innovations in the second generation included the transition from fixed program exposure to customizable variants via program shift, which allowed photographers to bias toward faster shutters or wider apertures based on creative needs, a feature enabled by the upgraded five-pin lens communication protocol. Metering algorithms advanced with the 6-segment system in upper models, which analyzed light distribution across the frame to reduce underexposure in backlit scenes and improve overall handling by up to two stops in varied conditions compared to earlier evaluative metering. These enhancements built on the first generation's foundations, prioritizing intuitive interfaces for broader accessibility while setting the stage for further hardware integrations in subsequent lines.

Third generation bodies (1990–1993)

The third generation of Minolta A-mount film SLR bodies, known as the xi series, marked a significant by integrating motorized zoom functionality directly into compatible lenses, allowing body-controlled zoom speed and focus adjustments through an expanded 8-pin system in the . This innovation, introduced starting in 1990, enabled seamless power zooming and enhanced performance with xi-series lenses, building on the program modes of the prior i-series while prioritizing automated operation for a broader range of users. These cameras emphasized compactness and user-friendly interfaces, with features like eye-start activation and creative expansion cards for added functionality, though they retained compatibility with earlier A-mount lenses albeit without power zoom benefits. The 2xi, released in 1990, served as a compact entry-level model with 8-pin contacts that supported variable zoom control directly from the body when paired with xi lenses, offering a lightweight design weighing approximately 385 grams and powered by a single 2CR5 lithium battery. It featured a basic single-point system using a CCD sensor, an electronically controlled with speeds from 30 seconds to 1/2000 second plus bulb mode, and through-the-lens (TTL) open-aperture metering in programmed auto, aperture-priority, shutter-priority, and manual modes. The camera included a built-in LED AF illuminator and supported film speeds from ISO 25 to 5000 via DX coding, making it suitable for beginners seeking automated shooting without advanced manual overrides. The 3xi, introduced in 1991, built closely on the 2xi's foundation but added panorama mode for 13x36mm format shooting and quartz-date imprinting capabilities, maintaining the same 8-pin lens interface for power zoom with xi lenses. Weighing 420 grams, it incorporated a three-CCD for improved coverage, a shutter range of 30 seconds to 1/2000 second, and an 8-zone TTL metering system with spot metering option, supporting programmed auto and priority modes alongside manual control. This model also featured a pop-up flash with red-eye reduction and slow-sync options, enhancing its appeal for casual photographers interested in creative framing and data imprinting on 35mm . In 1992, the QTsi emerged as a point-and-shoot styled A-mount body with simplified and quartz-date imprinting, designed for ease of use with its detachable 35-80mm f/4-5.6 that leveraged the 8-pin system for power zooming. Measuring 13.5 x 9 x 5.82 cm and weighing 340 grams, it used two CR2 batteries and offered five preset exposure modes including , , and action, with a from 4 seconds to 1/700 second and a fixed single-point AF system. The built-in four-mode popup flash covered a range up to 4 meters at ISO 100, and its acute matte provided 90% coverage, positioning it as an accessible entry for travelers seeking automated performance without complex settings. The GT, launched in 1993 and targeted at travel photographers, featured sensor-based flash autoexposure and a up to 1/2000 second, with its ultra-compact body measuring 12.7 x 8.7 x 6.05 cm and weighing just 310 grams without the lens. It supported the 8-pin xi lens integration for body-controlled zoom and focus, utilizing a single-point with LED illuminator, TTL metering across eight zones, and modes including programmed auto, aperture-priority, and subject-program options like and sports. Powered by two CR2 batteries, the GT included a built-in flash with auto high-speed sync and date imprinting, emphasizing portability and quick setup for on-the-go shooting with 35mm film speeds from ISO 25 to 3200. The 5xi, released in 1992 as a option, introduced a three-point system with four CCD sensors and power zoom support up to 1 frame per second in continuous mode via the 8-pin contacts, weighing 525 grams and using a 2CR5 battery. Its operated from 30 seconds to 1/2000 second with a 1/90-second X-sync, paired with TTL open-aperture metering in 14 segments for precise exposure in programmed auto, priority, and manual modes. Additional features included eye-start AF activation, a top LCD for settings display, and compatibility with creative expansion cards for functions like exposure bracketing, making it a versatile choice for enthusiasts needing balanced automation and control. The 7xi, debuted in 1991, offered advanced capabilities with a 1/4000-second and custom options, supported by a nine-CCD array and the 8-pin system for variable-speed power zoom with xi lenses, in a body weighing 650 grams powered by a 2CR5 battery. It featured a 14-segment honeycomb metering pattern integrated with for dynamic scene analysis, continuous shooting at up to 3.7 frames per second, and modes including programmed auto, shutter-priority up to 1/8000 second, and manual with , plus flash control and eye-start metering initiation. This model also supported creative cards for specialized functions like sports action prediction, appealing to semi-professionals requiring fuzzy logic-enhanced automation. Topping the lineup, the of 1992 provided professional-grade features with a five-point system using four CCD sensors, 3 frames-per-second capability, and wireless remote control, all enabled by the 8-pin for precise body-directed zoom and focus adjustments with xi optics. Its carbon-reinforced shutter achieved speeds up to 1/12000 second with 1/300-second X-sync, supported by 14-segment TTL metering and modes encompassing programmed auto, aperture-priority, and full manual, in a robust 755-gram body using six AA batteries for extended operation. The camera included omni-dimensional predictive , high-speed sync flash up to 1/12000 second with compatible units, and a 92% coverage with transparent LCD overlays, setting benchmarks for speed and integration in A-mount SLRs at the time.

Fourth generation bodies (1993–1996)

The fourth generation of A-mount SLR bodies, spanning 1993 to 1996, introduced the si-series, emphasizing ergonomic "super integrator" designs that integrated advanced with intuitive manual controls. These cameras featured dual command dials for rapid adjustments to and , allowing photographers to seamlessly transition between fully automatic point-and-shoot operation and creative manual modes. Building on the zoom-centric of the prior xi-series, the si-series prioritized thumb-operated dials and enhanced information to appeal to both amateurs and professionals seeking balanced control without overwhelming complexity. The entry-level Minolta 300si, released in 1993, offered accessible features in a lightweight body weighing 380 grams, including dual command dials for exposure adjustments and an 8-segment honeycomb-pattern metering system for TTL exposure evaluation across a range of EV 1 to 20 at ISO 100 with an f/1.4 lens. Its electronic provided speeds from 30 seconds to 1/2000 second, with a single-frame advance rate of 1 fps and built-in flash supporting red-eye reduction. The camera supported AF lenses and used a single 2CR5 lithium battery, making it suitable for beginners transitioning to SLR . In 1994, the Minolta 350si refined the 300si's design with an added eye-reduction lamp for more effective red-eye correction during flash use and an upgraded back LCD panel for clearer data display, including film speed and frame counter readouts. Retaining the compact dimensions of approximately 147 x 101 x 68 mm and the same shutter and metering capabilities, it maintained compatibility with DX-coded 35mm film from ISO 25 to 5000, while introducing minor improvements in power efficiency from the 2CR5 battery. The compact Minolta 400si and 450si panorama date, both introduced in 1994, targeted portable shooting with dimensions of 148.5 x 91.5 x 67.5 mm and a weight of 395 grams without battery or lens. They featured an 8-segment TTL silicon photocell metering system (EV 1-20 range) and a 30s to 1/2000s shutter, with the 450si variant adding a quartz data back for date/time imprinting and mid-roll mode switching to produce 13x36 mm frames on standard 35mm film. Both models included subject-program modes like and , with a 0.7-7m range via CCD sensors, and a built-in fill flash, powered by a 2CR5 battery. Mid-range options included the Minolta 500si and 550si panorama date from 1993, which offered a 1/2000s top shutter speed alongside 30s to bulb exposures and auto panorama capability on the 550si variant for seamless format changes without film unloading. These models employed 8-segment metering, three-point CCD autofocus for improved tracking, and drive modes up to 1 fps, with the panorama date version integrating quartz imprinting for year/month/day or day/hour/minute data. The bodies measured about 149 x 96 x 66 mm, used 2CR5 batteries, and supported creative exposure modes including aperture and shutter priority. The Minolta 505si, introduced in 1994, enhanced speed through refined CCD line sensors and predictive focus control, achieving focus acquisition down to EV -1 illumination. Compact at 135 x 90 x 61 mm and 350 grams, it used two CR2 batteries and included red-eye reduction flash, with a 30s to 1/4000s shutter, 14-segment honeycomb metering (EV 0-20), and 2 fps continuous shooting. Introduced in 1995, the Minolta 600si provided hybrid analog-digital interface features, such as dedicated knobs for , drive mode, and flash power, alongside compatibility with standard 35mm but with optional adapters for emerging formats like APS in related systems. It featured a 30s to 1/4000s shutter, 14-segment TTL metering, three-point AF, and 2 fps burst, in a body of 156 x 98 x 73.5 mm weighing 360 grams with 2CR5 power. The Minolta 650si, also from 1995, advanced metering with switchable 14-segment, center-weighted, and modes (2.7% coverage, EV 3-20), plus a quiet drive mode for reduced operational noise during film advance. Its 30s to 1/4000s shutter and 2 fps capability were housed in a 156 x 98 x 73 mm polycarbonate-metal hybrid chassis weighing 370 grams, powered by 2CR5, and included panorama adaptation. Higher-end models like the Minolta 700si (1993) delivered advanced performance with 14-segment honeycomb-pattern metering—Minolta's matrix system analyzing scene contrast and distribution for balanced exposures—and a 4 fps burst rate in continuous mode. The 30s to 1/4000s shutter, five-point with wide-area selection, and Eye-Start autofocus activation were complemented by dual command dials in a 157 x 102 x 74 mm body weighing 550 grams on two CR2 batteries. The professional Minolta 800si (1994) topped the series with a vertical control grip option (VC-700) enabling 5 fps burst shooting, 14-segment honeycomb metering, and high-speed AF with predictive tracking up to 1/8000s shutter speeds. Its built-in zoom flash (24-80mm coverage, GN 20) and three customizable memory settings supported pro workflows, in a robust 153.5 x 107 x 71.5 mm body at 640 grams with 2CR5 power and PC sync terminal. Key innovations across the si-series included thumb dials for one-handed adjustments, bridging automated P-mode simplicity with manual overrides, and improved LCD illumination for low-light setup. These elements enhanced creative control while maintaining compatibility with all A-mount lenses, setting a foundation for later ergonomic evolutions.

Fifth generation bodies (1998–2001)

The fifth generation of A-mount film SLR bodies marked the culmination of the company's analog SLR development, focusing on professional-level construction, enhanced , and superior optical integration for demanding photographers. These models incorporated advanced distance-encoded lens communication, enabling precise exposure adjustments and sophisticated ADI (Advanced Distance Integration) flash metering that accounted for subject distance data from compatible lenses to optimize flash output. Low-light performance was improved across the lineup to -2 EV at ISO 100, allowing reliable operation in dim conditions without auxiliary illumination. This generation emphasized durable materials and intuitive controls, building on prior Si-series dial for seamless handling. The 505si Super (1998) served as an updated entry-level extension of the si-series within this era. The Maxxum 9 (Dynax 9 in ), released in 1998 as the flagship professional body, featured a chassis reinforced with elements for exceptional build quality and weather resistance. Its focal-plane shutter delivered speeds from 30 seconds to 1/12,000 second, paired with a 7-point phase-detection system that provided wide-area coverage and fast acquisition. Continuous shooting reached 5.5 frames per second in manual focus mode (4.5 fps with tracking), while wireless ADI flash support via compatible units like the 5400HS enabled off-camera lighting with automatic power adjustment based on lens distance information. Introduced in 1999, the Maxxum 7 (Dynax 7) targeted advanced enthusiasts and pros with its weather-sealed body, offering robust protection against dust and moisture. The camera's electronically controlled shutter operated up to 1/8,000 second, complemented by a 9-point array incorporating center dual cross-hair sensors for enhanced precision and 3D predictive tracking to maintain focus on moving subjects. A dedicated custom functions menu allowed 35 programmable options, including priority modes and exposure tweaks, while eye-start activation and a bright 93% coverage improved usability during dynamic shoots. The Maxxum 5 (Dynax 5), launched in as a option, adopted a compact, lightweight design without compromising core performance, weighing approximately 335 grams. It employed a 7-point system with selectable local and spot areas for versatile focusing, alongside eye-start that initiated metering and AF upon detecting the user's grip and eye proximity to the . With a shutter range to 1/4,000 second and 3 fps continuous advance, the Maxxum 5 integrated seamlessly with distance-encoded lenses for accurate ADI flash and low-light AF down to -2 EV, making it an accessible entry into the generation's technological advancements.

Sixth generation bodies (2001–2004)

The sixth generation of A-mount SLR bodies, produced between 2001 and 2004, marked the end of the company's commitment to 35mm cameras amid the rising popularity of . These entry-level models were designed for casual users, emphasizing lightweight construction, simplified controls, and compatibility with the evolving A-mount lens lineup, including those with digital distance encoding (D lenses) introduced in the late for enhanced metering precision. Constructed primarily from to reduce weight and cost, they featured basic but effective systems and built-in flashes, bridging traditional shooting with features refined from higher-end predecessors like the Maxxum 5 and 7. The Maxxum 70 (Dynax 60 in ), released in 2004, served as an accessible entry-level option with a vertical metal offering speeds from 30 seconds to 1/2000 second plus bulb mode. Its TTL phase-detection autofocus system used a crosshair CCD array with sensitivity from EV -1 to EV 18 (ISO 100), supporting single-shot, continuous, and direct manual focus modes, while the built-in AF illuminator extended usability in low light up to 5 meters. Weighing just 375 grams and measuring 135 x 92 x 66.5 mm, the plastic body prioritized portability, and 14-segment honeycomb-pattern metering (EV 1-20) ensured reliable exposures across various conditions. Date imprinting was available on select variants, catering to documentary-style photography. The Maxxum 50, introduced in 2004, shared a similar profile to the 70 as a compact body but incorporated panorama cropping capability alongside date functions for versatile framing options in and event shooting. It retained the core shutter range of 30 to 1/2000 second and basic TTL AF setup, with a focus on user-friendly programmed modes to appeal to beginners during the shift toward digital alternatives. The lightweight design echoed the era's trend toward affordable, plastic-bodied SLRs compatible with encoded A-mount lenses for automatic aperture control and improved flash metering. Building on these, the Maxxum 40 of 2003 offered refined metering with a 14-segment system and optional center-weighted or spot options for more precise control in varied lighting. Its 3-point array provided reliable tracking for casual subjects, paired with a shutter from 30 seconds to 1/2000 second, and the body weighed 335 grams in a compact 135 x 92 x 66.5 mm form. Eye-start activation—borrowing from designs like the Maxxum 7—was included to streamline shooting by initiating focus upon detecting the user's approach to the . This model emphasized creative modes, including subject-specific programs, while supporting D-lens data for advanced exposure calculations. The Minolta Maxxum 40, launched in 2003, represented the most basic offering in this lineup, targeting novice photographers with fixed auto modes and simplified interfaces. Featuring a 30-second to 1/2000-second shutter and a 3-point system with 1/90-second flash sync, it lacked advanced customizations but delivered consistent performance through TTL metering. At 335 grams and sized 135 x 92 x 67 mm, its plastic construction kept it economical and easy to handle, with full compatibility for A-mount lenses including those with digital encoding to maintain relevance as waned. This model underscored Minolta's strategy to provide straightforward tools for casual use right up to the digital era's dominance.

Digital A-mount Bodies

Minolta digital SLRs (1995–2004)

Minolta's initial foray into digital single-lens reflex (SLR) cameras using the A-mount system began with experimental models that adapted existing bodies to digital capture, marking a transitional phase before fully integrated digital designs. These early efforts, spanning from 1995 to 2004, highlighted the company's innovative approach but were hampered by technological limitations of the era. The RD-175 served as a proof-of-concept add-on, the RD-3000 as an early standalone digital model, while the Maxxum 5D and represented more consumer-oriented bodies that retained A-mount compatibility and -era ergonomics. The RD-175, introduced in 1995 as a collaboration with Agfa (branded ActionCam by Agfa), was the world's first digital SLR and an add-on digital back for the Minolta Maxxum 500si Super body. It utilized a beam-splitting prism to direct light to three separate 1/2-inch CCD sensors—two for green channels and one each for red and blue—yielding a combined resolution of 1.75 megapixels (1528 × 1146 pixels). This three-CCD design aimed to improve color accuracy over single-sensor systems but resulted in a fixed of f/6.7 and slow readout times due to the sequential processing of sensor data, limiting burst shooting and live view capabilities. Priced at an MSRP of $9,995 for the back alone, it was compatible with A-mount lenses and Maxxum flashes but required specialized PCMCIA Type III ATA cards for storage and operated at a single ISO sensitivity equivalent to around 800, making it more of an expensive prototype than a mass-market product. In 1999, introduced the DiMAGE RD-3000, an early standalone digital A-mount camera with a 3-megapixel (1984 × 1360 pixels) 1/2-inch (6.4 × 4.8 mm) CCD and a of approximately 5.4×. Featuring a compact body derived from the Vectis APS line but adapted for digital SLR use, it offered shutter speeds from 30 seconds to 1/2000 second, a fixed ISO of 160, and storage on cards. The RD-3000 provided TTL metering and compatibility with A-mount lenses, along with a 1.8-inch LCD for playback, though its small limited image quality and low-light performance compared to later models. Nearly a decade later, released the Maxxum 5D in 2004 (Dynax 5D in ), its first fully integrated digital A-mount SLR and a direct successor to the film Maxxum 5. Featuring a 6.1-megapixel APS-C-sized (23.5 × 15.7 mm) CCD sensor with a 1.5× , it delivered images at up to 3008 × 2000 resolution in a 3:2 aspect ratio. The camera inherited the weather-sealed body and eye-start from its counterpart, activating the metering and AF systems via an infrared sensor near the . It supported 3 frames per second continuous shooting for up to 5 frames, a 5-point phase-detection AF system, and ISO settings from 100 to 1600, with a 2.5-inch LCD for playback. Storage used Type I/II cards, and it maintained full compatibility with A-mount lenses, providing a bridge from workflows to digital without requiring new glass. The same year saw the launch of the higher-end Maxxum 7D (Dynax 7D), positioned as a professional-grade model based on the film Maxxum 7's , with a similar 6.1-megapixel CCD (3008 × 2000 max resolution) and 1.5× . It introduced the industry's first body-integral via CCD-shift Anti-Shake technology, using gyroscopic s to move the sensor up to 2 stops to counteract hand-held blur, effective across all A-mount lenses. The 9-point AF system, with central cross-type sensitivity, paired with eye-start activation and a 3 fps burst rate (up to 11 frames in ). ISO ranged from 100 to 3200, supported by noise reduction processing that allowed usable results at higher sensitivities, and the 2.5-inch LCD offered 95% coverage with diopter adjustment. Like the 5D, it used storage and emphasized ergonomic familiarity for film users transitioning to digital. These early digital SLRs faced significant challenges, including high costs—the RD-175's price positioned it as a niche tool for professionals, while the 5D and launched at around $1,000 and $1,600 body-only, respectively, amid competition from more affordable rivals. Processing speeds were limited by the era's CCD technology and electronics, with the RD-175's multi-sensor setup causing notable readout delays, and even the 2004 models exhibiting slower buffer clearing and USB transfers (initially 7.5 Mbps, improved to 25 Mbps via ). Despite innovations like Anti-Shake, adoption was constrained by these performance bottlenecks and the rapid evolution of , though the 5D and successfully preserved A-mount lens ecosystems for digital use.

Sony Alpha A-mount SLRs and SLTs (2006–2016)

Sony entered the digital SLR market with the α100 in June 2006, marking the first A-mount body under its Alpha branding and serving as an entry-level camera that built upon Minolta's prior digital foundations. It featured a 10.2-megapixel CCD sensor, in-body Super SteadyShot effective up to four stops, and a continuous shooting rate of 3 frames per second. The camera incorporated Sony's image processor for enhanced noise reduction and dynamic range, alongside an optical and a 2.5-inch LCD, positioning it as an affordable option at around $999 with kit lens. The lineup progressed through the α200 to α700 series between 2007 and 2009, introducing refinements for consumer and enthusiast users. The α700, launched in 2007, upgraded to a 12.2-megapixel sensor, 5 fps burst shooting, and improved ISO performance up to 6400, while retaining Super SteadyShot and adding dual processors for faster processing. Subsequent models like the α200 (2008) maintained the 10.2-megapixel sensor but enhanced with a larger 2.7-inch LCD, and the α350 (2008) pioneered live view functionality in the A-mount system, allowing real-time composition on the LCD. These cameras emphasized accessibility, with features like creative styles for in-camera adjustments and higher ISO capabilities for low-light shooting. Sony expanded into full-frame territory with the α900 in September 2008 and the more affordable α850 in August 2009, both utilizing a 24.6-megapixel for superior resolution and . The α900 offered 5 fps continuous shooting and a 100% coverage optical , while the α850 provided similar imaging at 3 fps with cost-saving measures like a non-interchangeable . Both models included Super SteadyShot, dual processing, and ISO up to 6400 (expandable to 25600), appealing to professionals transitioning from . These full-frame bodies highlighted 's commitment to high-end A-mount performance, with the α900 earning praise for its low-noise full-frame output. The introduction of Single Lens Translucent (SLT) technology in 2010 revolutionized A-mount autofocus and video capabilities, enabling phase-detection AF during live view and recording without mirror blackout. The α33 and α55, released in September and August 2010 respectively, were the first SLT models: the α33 with a 14.2-megapixel APS-C sensor and 7 fps bursts, and the α55 with 16.2 megapixels and 10 fps, both featuring electronic viewfinders (EVFs) for real-time exposure preview and continuous video AF at 1080i resolution. This translucent mirror design allowed smooth subject tracking in video, a significant advancement over traditional SLRs. The α77, launched in August 2011, elevated the APS-C SLT line with a 24.3-megapixel sensor, 12 fps continuous shooting with AF, weather-sealing for durability, and a 2.35-million-dot EVF, targeting action and outdoor photographers. High-end full-frame SLTs followed, with the α99 in September 2012 combining a 24.3-megapixel , 6 fps bursts, and the SLT's hybrid system for improved tracking. It introduced principal + contrast-detect points for faster acquisition and included 1080p video with stereo sound, alongside a 1.2-million-dot articulating LCD. The α99 II, released in September 2016 as the final major A-mount body, featured a 42.4-megapixel back-illuminated full-frame , 4K UHD video recording, and a hybrid system with 79 phase-detection points plus 399 on-sensor points for precise coverage across the frame. Capable of 12 fps bursts with continuous and 5-axis in-body stabilization, it represented the pinnacle of A-mount innovation, though Sony shifted focus to the E-mount mirrorless system thereafter, ceasing new A-mount developments after 2016.

A-mount Lenses

First-party lenses

The first-party lenses for the A-mount system were produced by from 1985 onward, followed by until 2006 and thereafter until production ceased in the 2010s. These lenses evolved from basic designs to advanced incorporating aspherical elements, apochromatic , and in-lens motors, optimized for both 35mm full-frame and digital formats. A hallmark of these lenses was 's use of multi-layer coatings, such as magnesium fluoride-based formulations, to suppress flare and ghosting in multi-element constructions essential for performance. Over the system's lifespan, and released approximately 50 lenses, with adding around 30 more, many as redesigns of originals. Sony also collaborated with Carl Zeiss to develop premium ZA (Zeiss Alpha) lenses, introduced starting in 2006, featuring T* anti-reflective coatings for superior contrast and reduced aberrations. Notable examples include the Carl Zeiss Sonnar T* 135mm f/1.8 ZA SSM, a high-speed telephoto prime with exceptional sharpness and , and the Vario-Sonnar T* 24-70mm f/2.8 ZA SSM, a standard zoom with SSM and sealing. The inaugural A-mount lenses debuted in 1985 alongside the Maxxum 7000, comprising 7 primes and 5 zooms that relied on screw-drive , where the camera's in-body motor engaged a helical within the lens for focusing. These early designs prioritized compactness and affordability while introducing integrated capabilities to the 35mm SLR market. Key examples include the AF 50mm f/1.7, a lightweight standard prime offering sharp results from f/2.8, and the AF 28-85mm f/3.5-4.5, a versatile standard zoom covering wide to short telephoto ranges with minimal distortion. In the , launched the premium G-series to target professional users, featuring aspherical elements for reduced and APO glass in telephoto models to correct chromatic issues. These lenses represented a leap in optical quality, with complex constructions of 8-15 elements that maintained high contrast and resolution across the frame. Standout G-series offerings include the AF 85mm f/1.4 G, a fast portrait lens renowned for its creamy and nine-blade diaphragm, and the AF 70-200mm f/2.8 G APO, a constant-aperture telephoto zoom with elements for lightweight yet high-clarity performance. By 2000, introduced distance-encoded () lenses, which transmitted focus distance data to the camera body via additional mount contacts, enabling advanced features like improved TTL flash metering and digital vignette correction. These full-frame lenses built on G-series while adapting to emerging digital SLRs. A representative model is the AF 17-35mm f/2.8-4 (), a wide-angle zoom with 14 elements in 11 groups, delivering edge-to-edge sharpness suitable for landscapes and . Sony's involvement from 2006 brought in-lens autofocus motors to eliminate reliance on body-driven screw mechanisms, enhancing speed and silence for video and wildlife applications. The Super Sonic wave Motor (SSM) powered high-end G-series updates, while the more cost-effective Smooth Autofocus Motor (SAM) appeared in mid-range designs. Examples include the Sony 135mm f/2.8 (SAM), a compact telephoto prime with Nano AR coating for flare resistance, and the Sony 300mm f/2.8 G SSM II, an upgraded super-telephoto with SSM II for faster acquisition and weather sealing. For sensor bodies, Sony developed the DT-series starting in 2006, featuring shorter flanges and optimized designs to minimize size and cost without compromising image quality on crop sensors. These lenses often included internal focusing for consistent performance. The Sony DT 18-250mm f/3.5-6.3, a superzoom spanning wide to telephoto, exemplifies the series with its 16 elements in 13 groups and one ED glass element for color fringing control, though it exhibits some softness at extremes. In total, the DT lineup comprised about 11 zooms and primes, complementing the roughly 25 full-frame options from Sony.

Third-party lenses

Third-party manufacturers have produced a wide array of lenses compatible with the Minolta A-mount system, offering cost-effective alternatives to first-party optics while supporting functionality on compatible bodies. These lenses, primarily from , , and Tokina, were designed with native A-mount compatibility, often relying on screw-drive mechanisms powered by the camera body for operation on Minolta and early Sony SLRs. Over 100 such models have been documented across these brands, providing options for various focal lengths and specialized applications like macro and wide-angle zooms. Sigma was an early and prolific contributor to the A-mount ecosystem, releasing autofocus zooms such as the 18-50mm f/2.8 EX DC in 2004, which featured a constant aperture and macro capabilities for sensors. Many lenses incorporated the company's Hyper Sonic Motor (HSM) for quieter and faster in-lens , though screw-drive models remained common for broader compatibility with bodies. Full support for A-mount continued through the , but shifted production toward after 2015, leading to discontinued updates for A-mount variants and occasional compatibility issues with Sony SLT cameras like the A33 and A55 due to electronic differences. Tamron's SP (Super Performance) series provided versatile zooms and primes tailored for A-mount, exemplified by the 28-75mm f/2.8 Di introduced in 2002, which offered full-frame coverage with aspherical elements for reduced aberrations and screw-drive AF suitable for Minolta Maxxum and Sony Alpha cameras. Later models integrated built-in motors like the Ultrasonic Silent Drive (USD) for independent autofocus, and Tamron's TAP-in Console utility enabled firmware updates to improve performance and compatibility on newer bodies. These lenses often delivered comparable optical quality to proprietary G-series options at lower prices, though AF speed could vary on screw-drive implementations compared to in-body motor designs. Tokina contributed with its AT-X Pro series, including manual and autofocus options like the 100mm f/2.8 macro lens from the late 1990s, which provided 1:1 magnification and internal focusing for A-mount SLRs, emphasizing sharp optics and robust metal construction. Tokina lenses typically used screw-drive , ensuring compatibility with Minolta's in-body motors but sometimes exhibiting slower acquisition speeds on high-end bodies due to mechanical reliance. Production of new A-mount models tapered off in the 2000s as Tokina prioritized other mounts. Cosina, under the Voigtländer brand, focused on high-quality manual primes that required adapters for A-mount use, such as the 50mm f/1.2 Nokton, originally designed for Leica M-mount but adaptable via third-party mounts to achieve on Minolta and bodies. These adapted lenses offered exceptional and low-light performance but lacked native , limiting them to manual operation. Overall, third-party A-mount lenses faced challenges like inconsistent speeds from screw-drive dependency, especially on bodies without strong in-body motors, and reduced new releases after 2016 as manufacturers aligned with 's E-mount transition. Despite this, they remain viable for legacy systems, providing affordable access to diverse .

Legacy and Compatibility

Sony acquisition and A-mount continuation

In 2003, Konica Corporation and Minolta Co., Ltd., both facing financial challenges amid the shift to digital imaging, agreed to merge their operations to consolidate resources and strengthen their position in the photography market. The merger was completed with the formation of Konica Minolta Holdings Inc. on August 5, 2003, combining their assets including the Minolta A-mount system, though the new entity continued to struggle with declining film-based revenues and competitive pressures in digital SLRs. By early 2006, announced its exit from the camera and film business due to ongoing losses, leading to the transfer of its photo division to Corporation for an undisclosed amount, effective March 31, 2006. acquired key assets such as development, design, and production capabilities for digital SLR systems, rebranding the Maxxum/Dynax line as the Alpha series while committing to maintain the A-mount for full with existing lenses. This acquisition provided with immediate entry into the DSLR market, leveraging 's established technology to support over 50 legacy A-mount lenses and ensure continuity for users. Sony's continuation strategy emphasized building on Minolta's foundations while integrating its own innovations, starting with the release of the α100 DSLR in June 2006, which was essentially a rebadged and updated version of the Maxxum 5D featuring a 10.2-megapixel and the inherited in-body Super SteadyShot stabilization. The company invested in advanced digital processing, introducing its proprietary image processor beginning with the α700 in 2007 to enhance , color accuracy, and overall performance across A-mount bodies. Over the next decade, Sony developed approximately 25 new A-mount lenses, including high-end G-series optics like the 70-200mm f/2.8 G SSM II, though its focus increasingly shifted toward full-frame and video capabilities in models such as the 2008 α900. A key milestone came in 2010 when Sony launched its Single Lens Translucent (SLT) technology with the α55 and α33 cameras, preserving the A-mount design for phase-detection while enabling live view and video recording without a moving mirror. Concurrently, introduced the E-mount system for its NEX mirrorless cameras as a compact alternative, signaling a diversification that extended A-mount support but prioritized the newer, more versatile mount for future growth.

Production end and current status

Sony ceased production of new A-mount camera bodies with the release of the α99 II in September 2016, which served as the final full-frame A-mount DSLR in the lineup. This model incorporated advanced features like a 42.4-megapixel back-illuminated sensor and 4D Focus autofocus system, but it represented the culmination of 's investment in the A-mount platform inherited from . Following this, Sony redirected all development resources to its E-mount mirrorless system, aligning with the industry's rapid shift toward more compact, versatile interchangeable-lens cameras that prioritized portability and innovative lens designs. The discontinuation was influenced by several factors, including declining sales and technical limitations of the A-mount. By 2015, A-mount cameras held only 0.4% of the Japanese , reflecting a broader erosion as consumers favored mirrorless options. The A-mount's 44.5 mm , compared to the E-mount's shorter 18 mm, restricted opportunities for designs and third-party adapter compatibility, further hindering competitiveness in a market demanding flexibility. executives later attributed the platform's stagnation to insufficient brand excitement around its SLT technology and failure to capture significant growth in the evolving landscape. As of 2025, offers no new A-mount hardware, with official support for the system effectively ending around 2021 when remaining camera models were delisted from the company's website. In February 2022, also discontinued production of all remaining A-mount lenses. updates for A-mount bodies, such as the α99 II's final version 1.01 released in May 2019, have long ceased, leaving users reliant on legacy software. Despite this, the used A-mount market thrives through second-hand platforms, where bodies and lenses remain readily available and affordable, supported by a dedicated engaging in active trading and repairs at independent service centers. The enduring value of A-mount gear lies in its extensive legacy ecosystem, with millions of lenses produced since , appealing to enthusiasts of vintage film revival on compatible Minolta-era bodies. However, digital A-mount cameras, particularly earlier CCD-equipped models like the α100 series, are increasingly prone to aging-related issues, including degradation manifesting as stuck pixels, color shifts, and overall image quality decline due to prolonged use and component wear. Independent repairs can mitigate these problems, but the lack of official parts underscores the platform's transition to enthusiast and archival use.

Compatibility with other systems

The Minolta A-mount system, while primarily designed for Sony's Alpha SLRs and SLTs, can be adapted to various modern mirrorless platforms through specialized adapters, continued use of its extensive lens catalog. Sony's official LA-EA series adapters, such as the LA-EA5 introduced in , bridge A-mount lenses to E-mount bodies on full-frame cameras like the Alpha 7 series. These adapters incorporate a built-in phase-detection motor, providing full compatibility with screw-drive lenses and supporting focal plane phase-detection AF along with AF/AE tracking up to 11 frames per second for SSM (Super Sonic Motor) and SAM (Super-sonic wave Motor) lenses. This setup preserves electronic communication for control and exposure metering, making it suitable for both stills and video applications on compatible E-mount bodies such as the α7 III and α7R IV. For broader interoperability with non-Sony mirrorless systems, third-party manual adapters from manufacturers like Fotodiox and Metabones allow A-mount lenses to mount on , , and Canon RF-mount cameras. These adapters achieve mechanically but operate without , particularly limiting screw-drive lenses that require in-body motor support. For instance, Fotodiox's Pro series adapters ensure precise flange distance matching for Nikon Z and Canon RF bodies, while Metabones offers an optical Speed Booster variant for E-mount that reduces the by 0.71x to counteract the adapter's thickness, though it still relies on manual focus and adjustment via the lens ring. Electronic control is typically lost on these manual adapters, requiring photographers to set apertures directly on the lens barrel. A-mount lenses can also be revived on classic Minolta film bodies using adapters to convert to the earlier SR/MD manual mounts, facilitating hybrid analog-digital workflows. These adapters, often featuring corrective optics to account for the 1mm flange focal distance difference between A-mount (44.5mm) and SR/MD (43.5mm), enable manual focus and aperture operation on cameras like the , though image quality may suffer slightly from added glass elements. Digital backs for A-mount SLRs remain rare due to the system's mechanical design and limited sensor integration feasibility. Despite these options, adaptations present limitations, including crop factor discrepancies when using full-frame A-mount lenses on APS-C E-mount bodies (1.5x crop), which narrows the field of view compared to native A-mount use. On full-frame adapters, no inherent crop occurs, but manual setups may introduce or light falloff with wide-angle lenses. Additionally, electronic aperture control is absent in non-Sony manual adapters, complicating precise exposure adjustments in dynamic shooting scenarios. In contemporary applications, hybrid photographers and videographers frequently adapt A-mount lenses to Sony A7 series cameras for cinematic video work, leveraging the LA-EA5's phase-detection AF to achieve smooth tracking in 4K footage. Third-party solutions like the Sigma MC-11, while primarily for Canon EF lenses, exemplify cross-system adapters that inspire similar A-mount extensions, allowing A-mount optics to integrate into Sony E-mount ecosystems for stabilized, high-resolution video production.

References

  1. https://camera-wiki.org/wiki/Minolta_RD-175
  2. https://camera-wiki.org/wiki/Minolta_Dynax_500si_Super
Add your contribution
Related Hubs
User Avatar
No comments yet.