ExtraWebcam 2.0.0.112

ExtraWebcam is the software that enables you to use Canon PowerShot series cameras as regular webcams for video conferencing, video recording, remote area monitoring, etc.
You can use any Windows software that takes standard video capture source as input. It's compatible with Skype, Yahoo, MSN, etc. You only need to configure your video chat software to use the ExtraWebcam Capture Source and have your camera connected to USB and powered on, the rest is done automatically - search for a connected camera and taking control over it.
ExtraWebcam has a tray icon utility that helps you to work with camera. You have live fiewfinder there to assist pointing camera and log window to see what's going on, connection progress, events. There's Zoom track bar that you can use to get closer view, and buttons for triggering AutoFocus and Macro mode switch on and off.
List of supported cameras:
Canon PowerShot A60/A70/A75/A80/A85/A95/A300/A310/A400/A510/A520/A620/A640
Canon PowerShot G2/G3/G5/G6/G7/G9/G10
Canon PowerShot Pro1
Canon PowerShot S1 IS/S2 IS/S3 IS/S5 IS
Canon PowerShot S30/S40/S45/S50/S60/S70/S80/S400/S410/S500
Canon PowerShot SD100/SD110
Canon PowerShot SX100 IS/SX110 IS
Canon IXY 200a/300a/320
Canon IXY PS S200/PS S330/PS S230
Canon IXY IXUS v2/IXUS 330/IXUS v3
Canon IXY DIGITAL 400/500
Canon DIGITAL IXUS 400/430/500/II/IIs