ISight image is too dark

I bought this iSight used from a friend and the image is too dark. My friend never used it so, he doesn't know anything. When I use iChat, Skype or Photobooth, the image is just too dark. I have looked endelessly for a solution and can't seem to find it. The box didn't bring a cd driver. I don't even know if it ever had one. Is there anywhere I can go to so I could change the webcam settings or any software that I must require to have?
Best Regards

Hi Mike,
You can adjust and brighten your iSight settings using iGlasses:
http://www.ecamm.com/mac/iglasses
If the image is really, really dark, it could be a more serious issue.
One known issue is a problem that can happen after installing Boot Camp. Take a look at this thread if you've installed Bootcamp:
http://discussions.apple.com/thread.jspa?messageID=2926603
Thanks,
Glen

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