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That makes sense, since it separates out green from yellow, which is where we have two cones close together in the spectrum (nominally green and red cones) and
by card_zero 2y ago
That makes sense, since it separates out green from yellow, which is where we have two cones close together in the spectrum (nominally green and red cones) and the most response and discrimination (humans are good at seeing greens).
This part is surely an error, though:
> So there’s no such thing as “red with a little green”—there’s just a less intense red.
This would mean that a monitor can't display orange (red with a little green).
- gilleain 2y agoHeh, meanwhile over here in paint world, I've been mixing red and green to make grey (specifically Royal Talens (362 Deep Rose) + (602 Deep Green)). I think of orange as yellow + small amount of red, but hey.
- peterashford 2y agoYeah, additive (light, monitors) and subtractive (paint) color systems work differently
- adastra22 2y agoI think you’re missing the point on orange. When I see aquamarine, I see blue and green at the same time. It feels like blue-green. Orange on the other hand looks and feels like a unique color, not red + green (although I know why that is). TFA is using physiology to explain why these color mixes are perceived differently.
- card_zero 2y agoYes, but at that point in the article, it's clearly talking about the amount of red, green, or blue signal being picked up by cone cells, and thus the wavelength or mix of wavelengths, which is additive mixing. It's claiming that red plus some green (in terms of stimulation of cone cells) equals dimmed red, which is factually incorrect. This part about "three filters" is overstated, I think, if based in fact at all. Presumably it's based on something the retina is known to do, but I hadn't heard before of red and green being preprocessed separately from blue, and given that we can see orange when presented with red and some green pixels, it's not exactly as stated.