Bruce Lindbloom has another test image on his website: a 16 megapixel image containing all possible RGB colors in an 8-bit per plane RGB space. The image is arranged with the colors in a regular order, so you can see where particular colors of interest are: I brought the image into Photoshop and changes the… [Read More]
Archives for October 2014
Photoshop color space conversion accuracy
[Note: this post has been rewritten to correct an error. The cause of the error was that Bruce Lindbloom’s desk image on his web site is in the sRGB, gamma 2.20 color space, while I thought it was in the sRGB IEC61966-2.1 color space. That caused some rather large errors, which are much smaller once the… [Read More]
Do color space conversions degrade image quality?
There is a persistent legend in the digital photography world that color space conversions cause color shifts and should be avoided unless absolutely necessary. Fifteen years ago, there were strong reasons for that way of thinking, but times have changed, and I think it’s time to take another look. First off, there are several color… [Read More]
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