David Christian Berg wrote:
... I don't see why. I mean, if I have C50 M50 Y50 that should be the same as K50 in my understanding. I should be able to replace any Cx Mx Yx with Kx and hence be able to have one CMY value 0 any time. I do know, it's not handled that way, but I don't see much reason for it.
Maybe you can clarify this for me!
I don't know a lot about this, and if you're interested I recommend taking Chris up on his offer to recommend some books, but one obvious case where it does matter is when colours don't overlap perfectly (or when colours are "mixed" by using dots of varying size and spacing, I don't remember the correct term right now). In these cases the difference between three different colours that blend together and real grey should be quite obvious (especially at the edges).