Anyone know how to get the autofocus (green) box to always default to the center of the frame when shutter is pushed halfway. When I push the shutter halfway, the box shows up at some location (rarely in the middle). Obviously I sometimes want it off center and I know you can move it with the arrow buttons. If 90% of the time I want it to be dead center, it would help if I could have it always start out there. Anyone else have this issue?