The Adobe Wide Gamut RGB color space is an RGB color space developed by Adobe Systems as an alternative to the standard sRGB color space. It is able to store a wider range of color values than sRGB. The Wide Gamut color space is an expanded version of the Adobe RGB color space, developed in 1998. As a comparison, the Adobe Wide Gamut RGB color space encompasses 77.6% of the visible colors specified by the Lab color space, whilst the standard Adobe RGB color space covers just 50.6%. An RGB color space is any additive color space based on the RGB color model. ... Adobe Systems (NASDAQ: ADBE) is a computer software company headquartered in San Jose, California that was founded in December 1982 by John Warnock and Charles Geschke. ... The title given to this article is incorrect due to technical limitations. ... The Adobe RGB color space is an RGB color space developed by Adobe Systems in 1998. ... 1998 is a common year starting on Thursday of the Gregorian calendar, and was designated the International Year of the Ocean. ... CIE L*a*b* (CIELAB) is the most complete color model used conventionally to describe all the colors visible to the human eye. ...
One of the downsides to this color space is that approximately 8% of the colors representable are imaginary colors that do not exist and are not representable in any medium [1]. This means that potential color accuracy is wasted for reserving these unnecessary colors.
When working in color spaces with such a large gamut, it is recommended to work in 16-bit color depth to avoid posterization effects. This will occur more frequently in 8-bit modes as the gradient steps are much larger. In computer graphics, the gamut, or color gamut, is a certain complete subset of colors. ... Posterization occurs when a region of an image with a continuous gradation of tone is replaced with several regions of fewer tones, resulting into an abrupt change from one tone to another. ...
For a color space with an even larger gamut, see the PhotoPro RGB color space The PhotoPro RGB color space is an RGB color space with an especially large gamut designed for use with photographic output in mind. ...
But they often don't realize that their choice of RGB working space is one of the main factors that dictates where they fall between the two extremes, because the working RGBspace defines the palette of available colors for their images.
AdobeRGB (1998) is a considerably larger space that grew out of wishful thinking for a future generation of video monitors.
Both spaces are deficient in the same area -- the yellows -- and wide-gamut output devices such as film recorders, Durst Lambdas, and so on, tend to extend their gamuts primarily into the yellow region, not the greens and blues.
In addition to the shapes outlining the gamut for sRGB and AdobeRGB, I have added a white line showing the extent of ProPhoto RGB'sgamut as well as an indication of the typical gamut of an Epson desktop printer on glossy paper (the gamuts of matte papers tend to be somewhat smaller).
AdobeRGB can still clip some very saturated yellows but does cover all the greens, and green is a very important color being in the middle of the visual spectrum and very prevalent in nature.
Just as AdobeRGB and sRGB contain the same number of colors as dictated by the limitations of how they are represented in 8-bit and 16-bit mode, ProPhoto too has to live within what the numbers are capable of.
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