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I can tell the difference between two 24-bit colors that are 1 value off in 1 channel, and that's not counting that digital displays can't fully exploit the dar

I can tell the difference between two 24-bit colors that are 1 value off in 1 channel, and that's not counting that digital displays can't fully exploit the darkest or brightest ranges of our eyes' sensitivity. Have you ever seen an HDR display showing well-made HDR content? Spatial resolution is not so easy, since we have much higher resolution at the center of our FOV.

dahart 7y ago
Sure, that is true, you can sometimes see the difference in two 8-bits-per-channel colors. But, it takes both time and more than one pair of photoreceptive cell in your eyes to see that difference. There’s a tradeoff between color resolution and spatial resolution. Your spatial resolution at the sensitivity of seeing the difference in 8-bit colors is way lower that 150 megapixels. BTW, 24 bit colors that are carefully done, paying proper attention to color space and gamma, have been specifically designed to be at the JND (just-noticeable difference) with a 1-bit change in value. If you can always and reliably see the difference between any pair of 24 bit colors that are only 1 bit different, then you have abnormally good color vision. It’s statistically unlikely for that to be true, but some people do have it.