Today I did my first real model shoot and the one thing I found aftewards is that a LOT of the photos I took were soft, even possibly out of focus, although it wasn't obvious until they were zoomed closer to full size. When I resampled them lower though may were acceptable. I'm wondering if it might have been my settings not being ideal. I used the D90 and an SB600 on camera for fill flash, with the 50-150 Tokina, on a large apeture, on the picture mode 'Portrait' (not themode), and I used the settings where it chooses the focus points it thinks you want (can't think of what its called).
I'm wondering if I should have just used 'Standard' Picture mode with maybe a -1 , and kept it on single focus point, focused and re-framed. Thoughts? Other possible reasons for focus issues? I was happy with the shoot, but would have been overjoyed if more didn't have the focus issues.