Hardware :: Looking For Mac Compatible Webcam With Zoom?

I've got a macbook pro, and although the built-in isight provides a nice quality picture, I hate the fact that it has no features and is completely fixed. Therefore, I'm looking for a new stand-alone webcam compatible with mac. I'd like to also have a zoom feature. I'm not incredibly anal about vid quality, so it that doesn't absolutely have to be top-notch. I'm willing to sacrifice a tad bit of vid quality to have zoom. Is it possible for me to find something like this in the $50 price range? (give or take $10 or so).