I can't answer your question, but here's a color gradation test I think is interesting: http://www.xrite.com/online-color-test-challenge
I'm on my phone, but I think when I took it I only missed two.
Perhaps it has something to do with detecting ripe crops, since our noses kind of suck (in comparison with the larger animal world)?
I'm on my phone, but I think when I took it I only missed two.
Perhaps it has something to do with detecting ripe crops, since our noses kind of suck (in comparison with the larger animal world)?