canon

powershot

web camera

webcam

directshow capture driver

CanonWebcam is the software that allows 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. You only need to configure your video chat or other software to use CanonWebcam 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.
Before purchasing the CanonWebcam software you can test your camera, and only when you get it working on your computer with your camera and your favorite video conferencing software you'll get ID for registering your copy online. So you try before you buy.
CanonWebcam has 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: PowerShot A60, PowerShot A70, PowerShot A75, PowerShot A80, PowerShot A85, PowerShot A95, PowerShot A100, PowerShot A200, PowerShot A300, PowerShot A310, PowerShot A400, PowerShot A510, PowerShot A520, PowerShot A620, PowerShot A640, PowerShot S1 IS, PowerShot S2 IS, PowerShot S3 IS, PowerShot S5 IS, PowerShot S30, PowerShot S40, PowerShot S45, PowerShot S50, PowerShot S60, PowerShot S70, PowerShot S80, PowerShot G2, PowerShot G3, PowerShot G5, PowerShot G6, PowerShot G7, PowerShot G9, PowerShot SX100 IS, PowerShot Pro1, PowerShot S200, IXY DIGITAL 200a, DIGITAL IXUS v2, PowerShot S230, IXY DIGITAL 320, DIGITAL IXUS v3, PowerShot S400, IXY DIGITAL 400, DIGITAL IXUS 400, PowerShot S410, IXY DIGITAL 450, DIGITAL IXUS 430, PowerShot S500, IXY DIGITAL 500, DIGITAL IXUS 500, PowerShot SD100, IXY DIGITAL 30, DIGITAL IXUS II, PowerShot SD110, IXY DIGITAL 30a, DIGITAL IXUS IIs