The Only Digital Cameras that can function as a webcam are the ones made in China. And there is no support for those cameras.

Since you question is specific to Windows 7, I suggest you post your question on the Windows 7 Forum.

Here is a link:;StickyWin_1263483057859


You can also look to Logitech for an answer.
They build and support webcams.

Here is a link:,en

If you don't find what you want to know, click on their "Support" button.