Canon support...

A Series

A10, A20, A30, A40, A60, A70, A75, A80, A85, A95, A100, A200, A300, A310, A400, A510, A520, A620, A640

S Series

S1 IS, S2 IS, S3 IS, S5 IS, S10, S20, S30, S40, S45, S50, S60, S70, S80

S Digital ELPH Series

S100, S110, S200, S230, S300, S400, S410, S500

SD Digital ELPH Series

SD100, SD110

SX Series

SX100 IS, SX110 IS

G Series

G1, G2, G3, G5, G6, G7, G9

Pro Series

Pro1, Pro90 IS

Canon EOS support...

WITHOUT Live View

1D Mark II, 1Ds Mark II, 1D Mark II N, 5D, 20D, 30D, Kiss Digital N/350D/REBEL XT, Kiss Digital N/350D/REBEL XTi

WIT Live View (Download Setup Instructions)

1D Mark III, 1Ds Mark III, 5D Mark II, 7D, 40D, 50D, 60D, DIGITAL REBEL Xsi/450D/Kiss X2, DIGITAL REBEL Xsi/1000D/Kiss F

Logitech support...

Webcams

All webcams

Other camera support...

DirectShow

Any video for Windows supporting camera