[sparkytwd]

I strongly recommend the PS3 Eye camera. They can be had for ~$20 on Amazon. They're also proper computer vision cameras, as they're designed to work with the little glowing controller thing from Sony. You get:

* Up to 120fps capture
* Up to 640x480 resolution
* Good driver support on Windows and Linux
* 2 lens settings (50deg and 70deg FOV if memory serves)

The other cool thing with the Eye, is so popular you can get 3rd party lenses and IR imaging solutions for it. In 2012 my team had a pretty sophisticated CV approach, but at one competition our sensor was blinded by the stadium lighting being mounted directly behind the backboard. 2013 we switched to using infrared for the retro-illumination and did not have a repeat.