On Jan 6, 2020, at 5:32 PM, David Scharf <electronman@roadrunner.com> wrote:
Hi Andrew,
My point was that when there are colors separated by an extremely small increment, they may be indistinguishable from each other and we may may perceive them to be the same color--so not invisible but visible--just not perceptually different. Seems like we are making two different valid arguments.
Yes, there are two 'issues' here. One as you point out are two sets of color numbers that are the same color (my sRGB example). So two color numbers that are separated by extremely small increments that are indistinguishable from each other, in my example, by a mere deltaE of 0.01 are indeed ONE color. And no, they are not invisible, if they were, they couldn't be called colors. The other 'issue' are numbers that are not at all colors as they cannot be seen (my ProPhoto RGB example). Andrew Rodney http://www.digitaldog.net/ <http://www.digitaldog.net/>