Posted: Aug 20, 2017 5:04 pm
by GrahamH
romansh wrote:
The_Metatron wrote:Or, is it possible that our observer is somewhat color blind? Less red sensitivity than others? It's something that could be quickly tested, and might be interesting.

I don't think so Metatron. In fact David is closer to seeing the "truer" colour. I also see a "greyness" to that strawberry picture, but more so on the background. But supposedly that picture is supposedly free of red pixels.

While all this is interesting it is not what the thread was originally about. ie the illusory nature of colour in general.

"truer colour"? What colour do you think those actual strawberries were? They were red, of course, not grey or blue. Colour constancy allows us to correctly identify things by colour even in unusual lighting conditions. Someone who can't do that is at a disadvantage.