D200 Focus problem

[simonliu]

Hi gurus, lately I noticed that my auto focus on my D200 does not seem to be as good as before. After shooting events, i noticed that a lot of my pics are OOF! using my 17-55 2.8. Was wondering could there be anything wrong with my camera

or

I'm really getting from bad to worst at photography.

[siew]

Could be motion blur. Try posting some samples and check the shutter speed. Bumping the ISO high enough is a good option when shooting indoors. BTW, what mode are you in. I suggest you do a lens focus test to determine if your lens have front/back focus issue. Printout the test chart. Link here http://photo.net/learn/focustest/