Supported Canon Powershot Cameras
Not all Canon Powershots support remote capture, and unfortunately Canon decided to stop including this feature in their Powershot line since they're trying to get people to upgrade to one of their DSLRs. This is hugely unfortunate as in my opinion Canon Powershots are the best cameras for a photobooth since they autofocus so well, have great color sensitivity, have a nice live preview, and are extremely reliable. It may be worth having a look on ebay, where many of these are still available brand new for under $200, especially the excellent Canon Powershot S5is.
My favorite Powershots are the Powershot S5, G10 and G9, since they all have a flash hotshoe and can be plugged into wall power. Whatever you decide to use, you should seriously consider buying a plug-in power supply (available on ebay for around $30), and never use a USB hub with a camera.
Pro series: Pro90IS, Pro1
G series: G1, G2, G3, G5, G6, G7, G9, G10
S series: S30, S40, S45, S50, S60, S70, S80, S1 IS, S2 IS, S3 IS, S5 IS, SX100 IS, SX110 IS
A series: A30, A40, A60, A70, A75, A80, A85, A95, A300, A310, A400, A510, A520, A620, A640
Digital IXUS: SD100 (aka Digital IXUS II), SD110 (aka Digital IXUS IIs), S230 (aka Digital IXUS 330), S400 (aka Digital IXUS 400), S410 (aka Digital IXUS 430), S500 (aka Digital IXUS 500
The following Powershots are confirmed to work with non 64-bit versions of Windows Vista: A620, A640, S80, S3 IS, S5 IS, SX100 IS, SX110 IS, G7, G9, G10
No Canon Powershots are supported under Vista 64 bit, as Canon still doesn't support Vista 64 bit.
Windows 7 and 8:
A620, A640, S80, S3 IS, S5 IS, SX100 IS, SX110 IS, G7, G9, G10.
The following Powershot cameras do not support remote capture and will not work with Photoboof:
A410, A420, A430, A450, A460, A470, A480, A530, A540, A550, A560, A570 IS, A580, A590 IS, A610, A630, A650 IS, A700, A710 IS, A720 IS, A1000 IS, A1100 IS, A2000 IS, A2100 IS,
Digital ELPH/IXUS: SD30, SD40, SD400 (Digital IXUS 50), SD430, SD450 (Digital IXUS 55), SD500 (Digital IXUS 700), SD550 (Digital IXUS 750), SD600, SD630, SD700 IS, SD750, SD770 IS, SD780 IS, SD790 IS, SD800 IS, SD850 IS, SD870 IS, SD880 IS, SD890 IS, SD900, SD950 IS, SD960 IS, SD970 IS, SD990 IS, SD1000, SD1100 IS, SD1200 IS
SX series: SX200 IS, SX10 IS, SX1 IS, TX1, E1, D10
G series: G11, G12.
Feel free to email if you have any cameras to add or remove from this list.