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Hub AI
Camera phone AI simulator
(@Camera phone_simulator)
Hub AI
Camera phone AI simulator
(@Camera phone_simulator)
Camera phone
A camera phone is a mobile phone that is able to capture photographs and often record video using one or more built-in digital cameras. It can also send the resulting image wirelessly and conveniently. The first commercial phone with a color camera was the Kyocera Visual Phone VP-210, released in Japan in May 1999. While cameras in mobile phones used to be supplementary, they have been a major selling point of mobile phones since the 2010s.
Most camera phones are smaller and simpler than the separate digital cameras. In the smartphone era, the steady sales increase of camera phones caused point-and-shoot camera sales to peak about 2010, and decline thereafter. The concurrent improvement of smartphone camera technology and its other multifunctional benefits have led to it gradually replacing compact point-and-shoot cameras.
Most modern smartphones only have a menu choice to start a camera application program and an on-screen button to activate the shutter. Some also have a separate camera button for quickness and convenience. A few, such as the 2009 Samsung i8000 Omnia II or S8000 Jet, have a two-level shutter button as in dedicated digital cameras. Some camera phones are designed to resemble separate low-end digital compact cameras in appearance and, to some degree, in features and picture quality, and are branded as both mobile phones and cameras—an example being the 2013 Samsung Galaxy S4 Zoom.
The principal advantages of camera phones are cost and compactness; indeed, for a user who carries a mobile phone anyway, the addition is negligible. Smartphones that are camera phones may run mobile applications to add capabilities such as geotagging and image stitching. Also, modern smartphones can use their touch screens to direct their cameras to focus on a particular object in the field of view, giving even an inexperienced user a degree of focus control exceeded only by seasoned photographers using manual focus. However, the touch screen, being a general-purpose control, lacks the agility of a separate camera's dedicated buttons and dial(s).
Starting in the mid-2010s, some advanced camera phones featured optical image stabilisation (OIS), larger sensors, bright lenses, 4K video, and even optical zoom, for which a few used a physical zoom lens. Multiple lenses and multi-shot night modes are also familiar. Since the late 2010s, high-end smartphones typically have multiple lenses with different functions to make more use of a device's limited physical space. Common lens functions include an ultrawide sensor, a telephoto sensor, a macro sensor, and a depth sensor. Some phone cameras have a label that indicates the lens manufacturer, megapixel count, or features such as autofocus or zoom ability for emphasis, including the Samsung Omnia II or S8000 Jet (2009) and Galaxy S II (2011) and S20 (2020), Sony Xperia Z1 (2013) and some successors, and Nokia Lumia 1020 (2013).
Mobile phone cameras typically feature CMOS active-pixel image sensors (CMOS sensors) due to largely reduced power consumption compared to charge-coupled device (CCD) type cameras. Some use CMOS back-illuminated sensors, which use even less energy, at a higher price than CMOS and CCD.
The usual fixed-focus lenses and smaller sensors limit performance in poor lighting. Lacking a physical shutter, some have a long shutter lag. Photoflash by the typical internal LED source illuminates less intensely over a much longer exposure time than a flash strobe, and none has a hot shoe for attaching an external flash. Optical zoom and tripod screws are rare, and some also lack a USB connection or a removable memory card. Most have Bluetooth and WiFi and can make geotagged photographs. Some of the more expensive camera phones have only a few of these technical disadvantages, but with bigger image sensors (a few are up to 1", such as the Panasonic Lumix DMC-CM1), their capabilities approach those of low-end point-and-shoot cameras. The few hybrid camera phones, such as Samsung Galaxy S4 Zoom and K Zoom, were equipped with real optical zoom lenses.
As camera phone technology has progressed, lens design has evolved from a simple double Gauss or Cooke triplet to many molded plastic aspheric lens elements made with varying dispersion and refractive indexes. Some phone cameras also apply distortion (optics), vignetting, and various optical aberration corrections to the image before it is compressed into a JPEG format.
Camera phone
A camera phone is a mobile phone that is able to capture photographs and often record video using one or more built-in digital cameras. It can also send the resulting image wirelessly and conveniently. The first commercial phone with a color camera was the Kyocera Visual Phone VP-210, released in Japan in May 1999. While cameras in mobile phones used to be supplementary, they have been a major selling point of mobile phones since the 2010s.
Most camera phones are smaller and simpler than the separate digital cameras. In the smartphone era, the steady sales increase of camera phones caused point-and-shoot camera sales to peak about 2010, and decline thereafter. The concurrent improvement of smartphone camera technology and its other multifunctional benefits have led to it gradually replacing compact point-and-shoot cameras.
Most modern smartphones only have a menu choice to start a camera application program and an on-screen button to activate the shutter. Some also have a separate camera button for quickness and convenience. A few, such as the 2009 Samsung i8000 Omnia II or S8000 Jet, have a two-level shutter button as in dedicated digital cameras. Some camera phones are designed to resemble separate low-end digital compact cameras in appearance and, to some degree, in features and picture quality, and are branded as both mobile phones and cameras—an example being the 2013 Samsung Galaxy S4 Zoom.
The principal advantages of camera phones are cost and compactness; indeed, for a user who carries a mobile phone anyway, the addition is negligible. Smartphones that are camera phones may run mobile applications to add capabilities such as geotagging and image stitching. Also, modern smartphones can use their touch screens to direct their cameras to focus on a particular object in the field of view, giving even an inexperienced user a degree of focus control exceeded only by seasoned photographers using manual focus. However, the touch screen, being a general-purpose control, lacks the agility of a separate camera's dedicated buttons and dial(s).
Starting in the mid-2010s, some advanced camera phones featured optical image stabilisation (OIS), larger sensors, bright lenses, 4K video, and even optical zoom, for which a few used a physical zoom lens. Multiple lenses and multi-shot night modes are also familiar. Since the late 2010s, high-end smartphones typically have multiple lenses with different functions to make more use of a device's limited physical space. Common lens functions include an ultrawide sensor, a telephoto sensor, a macro sensor, and a depth sensor. Some phone cameras have a label that indicates the lens manufacturer, megapixel count, or features such as autofocus or zoom ability for emphasis, including the Samsung Omnia II or S8000 Jet (2009) and Galaxy S II (2011) and S20 (2020), Sony Xperia Z1 (2013) and some successors, and Nokia Lumia 1020 (2013).
Mobile phone cameras typically feature CMOS active-pixel image sensors (CMOS sensors) due to largely reduced power consumption compared to charge-coupled device (CCD) type cameras. Some use CMOS back-illuminated sensors, which use even less energy, at a higher price than CMOS and CCD.
The usual fixed-focus lenses and smaller sensors limit performance in poor lighting. Lacking a physical shutter, some have a long shutter lag. Photoflash by the typical internal LED source illuminates less intensely over a much longer exposure time than a flash strobe, and none has a hot shoe for attaching an external flash. Optical zoom and tripod screws are rare, and some also lack a USB connection or a removable memory card. Most have Bluetooth and WiFi and can make geotagged photographs. Some of the more expensive camera phones have only a few of these technical disadvantages, but with bigger image sensors (a few are up to 1", such as the Panasonic Lumix DMC-CM1), their capabilities approach those of low-end point-and-shoot cameras. The few hybrid camera phones, such as Samsung Galaxy S4 Zoom and K Zoom, were equipped with real optical zoom lenses.
As camera phone technology has progressed, lens design has evolved from a simple double Gauss or Cooke triplet to many molded plastic aspheric lens elements made with varying dispersion and refractive indexes. Some phone cameras also apply distortion (optics), vignetting, and various optical aberration corrections to the image before it is compressed into a JPEG format.
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