drifting

I am making this interactive installation using jitter camera vision. The participates usually perform 4-5 feet away from the camera. And the performance is projected on a rear projection screen (the size of the screen is about 6 feet by 10 feet). I am currently using a Creative LAB Live! Cam Notebook Pro (VF0400). There is a problem with autofocus especially when the participates are more than one feet away from the camera.

Anyone has a suggestion of what kind of camera I should choose to get great resolution and fast autofocus? I have an Intel-Mac.

I am making this interactive installation using jitter camera vision. The participates usually perform 4-5 feet away from the camera. And the performance is projected on a rear projection screen (the size of the screen is about 6 feet by 10 feet). I am currently using a Creative LAB Live! Cam Notebook Pro (VF0400). There is a problem with autofocus especially when the participates are more than one feet away from the camera.
 Anyone has a suggestion of what kind of camera I should choose to get great resolution and fast autofocus? I have an Intel-Mac.
Thanks in advance.


Help in choosing a video camera