I regularly record performances in an auditorium using my iMovie with my 8mm digital camera. I'd like something with higher resolution, however. I'm looking for an HD USB webcam which has optical zoom (at least 2-3x, I would think). I don't need a regular HD video camera because I don't need the record ability. This would be connected directly to my Mac and thus record directly to disk. Is there anything out there for around $100-200 that would do what I want? I've searched around some but haven't yet found anything.