I've noticed that a lot of people (myself included) have an issue with the camera's auto focus. The problem is that most pictures will go slightly out of focus. Even when touching the viewfinder to focus manually you can see the picture focus perfectly before going slightly out of focus and "going green" to indicate it thinks it's focused correctly.
I was trying to take some photos from the audience of performers on the stage, and the camera was really struggling and failing to Focus. Understandable, that the lighting would be difficult for an auto-focus setup, so I dug into the settings.
The choices under Focus are: Auto, Manual, and Face tracking.