For those situations where you need to be able to trigger your Canon camera body for still or video without actually touching the camera, the RC-6 is here for you. Compatible with a multitude of Canon bodies, the RC-6 can trigger system up to 16 feet, and can be used to take an image, start video, trigger mirror lock up and Buld modes, or switch to the Discovery Channel. Just kidding on that last one. You can also set it for instant or a 2 second delay.