I use a product called, "Zap-Shot" however I think it only works on the lower Canon cameras- I use the XTi. It works great as it is a radio frequency remote so I don't have to be close or in front of the camera. I can set up my camera and even camafladge it and be up to about 75 feet away, (I believe that is the range,). I know there are other brand name units out there - great for wildlife.