thats the issue, if they pull focus your eyes just can't deal with it, you only can look at what they are focusing on or else it goes to sh*t. Matters less in games where everything is always in focus. there it has potential.
yeah, I thought Avatar was "good" overall, but I have nothing to compare it to, as I haven't seen any other 3D in well...ever, I think.
Avatar suffered from a shit-ton of aliasing, and really, really shallow fields (though technically, depth of field is really shallow in the eyes, as well.) I don't know, maybe the shallow field is necessary, otherwise the brain would explode...but the problem is that when you turn your head, you see the source object as being out of focus, rather than
your own interpretation of focus. A major part of mise-en-scene has always been the depth of field--the auteur's choice as to what is important in each shot, how to direct our eyes and our attention towards the important elements of each scene.
3D makes us want to look at everything, but the shallow field still exists in the source material, so the idea of 3D remains broken in implementation, and probably will always be broken, once you parse it down to that reality.
That's problematic, considering how we understand the things that we see, and how we naturally assume a 3D film should represent the natural world, which it clearly can not do.