Not being an artist or a photographer. I did take some art classes, though, and one in photography. I noticed that each has a totally different way of thinking from the other.

So in my opinion.... not expert, either... here goes...

An artist can add or remove details what he or she doesn't want, but a photographer can't do that (well, not in the old days). A photographer must look for the master piece, rather than make it up. And, of course, presentation is everything...

There's no doubt, photographers must have a discipline and learn that way of thinking in order to be an Ansel Adams or even to be half way decent....

Any way, that is a lay person's take on it.