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Message: <blockquote data-quote="Fast Learner" data-source="post: 5722837" data-attributes="member: 649">I'm not aware of any systems that use more than 32 bits to store a pixel's color -- 64 bit processing is popular now, but the colors themselves are, as far as I know, stored in 24 or 32 bits, depending on whether they include transparency information.8 red bits (256 levels) * 8 green bits * 8 blue bits = 16,777,216 possible colors, 24 bit color. For most colors this is beyond what humans can perceive.Add 8 bits of transparency information (256 levels) = 4,294,967,296 possible color values, though still 16.7 million colors, for 32 bit color value storage.64 bit color would allow for 16 red bits (65,536 values) * 16 green bits * 16 blue bits for roughly 281,474,976,700,000 colors; 281 trillion is certainly more than the human eye can detect and more than most (all?) instruments can detect. Plus 16 transparency bits (which actually would be nice) for roughly 18,446,744,070,000,000,000 combinations, 18 quintillion, which is just nutty.</blockquote>