wide-angle digital camera

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I want buy some wide-angle digital camera for computer vision.
Preferably, it should have USB or another comercial bus connection to
the computer.

It does not matter to me to use fisheye or pinhole cameras.

I think I need some kind of webcam, but the technical information in
web pages of manufacturer is poor. I have been searching Internet for
it, but I haven't found any thing. I only read something about old
Quickcam cameras.

Can any help me?, please.

Thank you.