My D5100 was stolen so I decided to upgrade with a D7100. My problem is that photos of people are not sharp. For portraits, I typically focus on the eye, but the focus points on the D7100 are so large, I inevitably get a good part of the face. I don't know if this is the issue or not. I printed a focus chart and tested camera & lens. Sharp, both on the tripod and hand-held. I use only AF-S, single point of focus. I can't figure out what I'm doing wrong. If anyone has any thoughts or suggestions, please let me know.
Well, as usual the error is behind the camera. I looked back at yesterday's test shot and realized I had failed to keep the camera parallel to the target for my 'far right' shot, so I did it over again today and all focus points appear to be sharp. So, Marc probably had the answer when photographing people, use AF-C to mitigate movement. Thanks.
I am not sure how the D5100 worked but with the D7100 AF-S mode, once locked on focus will not adjust for any movement. Try AF-C focus priority, that may solve your problem. You may just have a little movement by either the subject, yourself or both causing the problem.
Marc There are always two people in every picture: the photographer and the viewer.-Ansel Adams
What lens are you using? Most lenses fall off a great deal in resolving power at the sides compared to the center. If the focus is off, something will still be sharply in focus, maybe not what you intended however. When corner softness is the cause, nothing is quite perfect. Please post an image that demonstrates what you are getting so we can make suggestions. Stan St Petersburg Russia