Logitech has unveiled a new line of webcams today that can take advantage of Logitech's Vid HD software to make free two-way high definition video calls. The flagship HD Pro C910 will sell for $100 and offers 720p video calling, 1080p video recording, 10-megapixel still photo captures, a Carl Zeiss lens, Logitech's Fluid Crystal technology for smoother motion and truer colors, two microphones for stereo audio, and one-click uploads to Facebook and YouTube.

The C510 features a foldable design that's ideal for users always on the go. Though most notebooks today feature built-in webcams, with this $60 stand-alone device you'll get 720p video calls and video recording, 8MP photos, and a 360-degree rotation capability. Logitech will sell its HD Webcam C310 and Logitech HD Webcam C270 for $50 and $40, respectively, with a reduced feature set but still capable of making 720p video calls.

Besides supporting Logitech's free Vid HD software, which is now available for both Windows and Mac OS X systems, all four webcams are Skype-certified and will work with all major video-calling clients including Yahoo! Messenger, Windows Live Messenger, and Gmail Voice and Video Chat.