Last active
August 29, 2015 14:01
-
-
Save RoyalIcing/43a6765cd6448c67d6a8 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| http://www.adobe.com/digitalimag/pdfs/phscs2ip_colspace.pdf |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Design and benefits of RGB workspaces
Photoshop provides a number of synthetic RGB color working spaces. While some of these working spaces are based on specifications of existing devices, none are constructed to define any individual device. An example is sRGB, a theoretical color space derived from HDTV standards. These precise specifications define such parameters as the ambient light surrounding this hypothetical display. The actual device behaviors of displays are often dissimilar to such specifications. Plus, you can’t depend upon any two devices behaving identically. Further, many devices change behavior as they age, so you should not assume they fall into this precise sRGB description. A display system has specific idiosyncrasies and has a fixed gamut size that further produces limitations when used to define a document’s color.
Synthetic color spaces do not have to suffer any of these limitations. These RGB working spaces are mathematically constructed to provide a color space that provides useful and flexible editing qualities. For example, one benefit of synthetically constructed RGB working spaces is that it is easy to define a neutral color. When each value of red, green and blue is equal anywhere within the entire color space, that color is neutral. This benefit is not necessarily the case with color spaces based on actual devices like a scanner, digital camera, and certainly not a printer. In a synthetic RGB working space, you are assured that a color is neutral gray when all three values are equal. For example, R5/G5/B5 as well as R200/G200/B200, or any identical set of RGB numbers defines a neutral color. This behavior is one reason RGB working spaces are often referred to as “well behaved,” and makes it easy to use the various set-neutral eyedroppers in Photoshop and Camera Raw when you wish to ensure images have no colorcast.
http://www.adobe.com/digitalimag/pdfs/phscs2ip_colspace.pdf