I have a lot of experience doing travel, landscape, product, ... in short, things that don't move much. Models? Not so much. I have a beautiful 85mm portrait lens for my Canon 1Ds Mk III DSLR, and at f/6.3, I have a fairly high miss rate with auto-focus. By "miss" I mean the focus point was not the eyes, which I prefer to have in focus.
Models, as we know, don't stand still, so what is a typical reject rate because of focus? Should I feel bad if 20% of my images are focused on the nose? 30%? How do you deal with this?
Clarification: 80% in focus 20% focused on the wrong place.