I have not experienced your problem on any of my
Macs in any OS X version.
Here are my suggestions for your camera problem.
One of them will resolve your trouble. Try them in
any order you like, testing camera function after
each one until you have found the one that worked.
• If you have not already done so, restart Mac and
try again. A simple restart often clears up minor
issues, including yours.
• Try Apple's http://support.apple.com/kb/HT2090 suggestions. The
specific "reset" procedure suggested there for your particular MBP model
often restores normal function.
(Apple has changed the built-in camera's name on newer Macs from "iSight" to "FaceTime" and then to "FaceTime HD." Regardless of the name of your built-in camera, the same info and troubleshooting applies.)
• Use your Mac's Disk Utility to repair permissions and then
download and apply the latest Combo Update, for your Mac OS,
the current one is at: http://support.apple.com/kb/DL1582
(yes, use this Combo even though you are already running 10.7.5)
Repair permissions again immediately following the system restart that completes the Combo update.
Then check whether your Mac's > Software Update... menu command tell you that other updates are needed. If so, apply them and finish with another permissions repair.
• Properly applying the Combo version of updates can usually correct software problems. However, if your trouble is caused by a hardware problem, there are no user serviceable parts of your webcam. For hardware help, contact an Apple-Authorized Service Provider for service.
Message was edited by: EZ Jim
Mac OSX 10.8.2