out of focus

We have 5 of the DS-2CD4324FWD-IZHS8 cameras, I upgraded the firmware on 2 of them from 5.2.0 to 5.3.0 without any problems. When I upgraded the 3rd camera, all seemed to go well but now the picture / view is out of focus and I can't get it back into focus via the web console. Am I going to...