Excerpt: This camera looks just like the Logitech QuickCam Pro for Notebooks released in 2007, but it is new on the inside. The box now has the name Webcam C905, not QuickCam. Since the physical design is identical I am just copying some of the review from the 2007 camera here.
Pros: RightLight® built in, Exelent image in all lighting levels, Sharp from side to side
Summary: The Logitech QuickCam Pro for Notebooks provides unmatched image quality, but its design could be improved. While the clear, bright video output will amaze, the constant readjusting of the camera atop your laptop will annoy.
Pros: Superior image quality, especially in low light; 2.0-megapixel sensor provides higher resolution than your typical Webcam; included QuickCam software is polished and easy to use.
Cons: Poor design makes it a challenge to secure Webcam to a laptop; not optimized for use with Macs.