First off, this is a great webcam, 10megapixels for this price range is great, especially with the built in mic which is really sensitive.
However, it has many drawbacks:
No auto focus.
The zoom is awfull (Just enlarges image and crops edges, kills the quality)
The lights are useless and stay on even when the PC is off.
It is a good webcam, however auto focus would have been nice, and it's kinda a pretty standard feature.
Don't let these minor flaws put you off, it is by far a very good product, visually, it is great, amazing detail, the clip is extremely strong, even with my tiny flatscreen it stays there tight and is fully adjustable if you want to just leave it on the desk.
Also, please note, that while it says 'driver free' it comes with drivers on a mini-Disk, which take all of 1 minute to install, and it happily works on my Windows 7 64bit after installing it. (Mini-Disks fit all regular normal sized disk drives)
Anyway, yeah, great product, a few limitations, but for this price, it's gold.