Canon RC-5 Wireless Remote Controller for Canon XT/XTi, XSi, 7D and T1i Digital SLR Cameras
The Canon RC-5 remote control makes taking group photos easy by allowing  you to take pictures remotely. The two-second shutter delay allows time to hide  the remote for unblemished group shots. Compatible with the Canon ELPH, ELPH  490Z, and Sure Shot Z135 Caption.