I got the shutter release for my 20D/5D with a 25 foot extension cord. Yesterday I set my camera on the tripod aimed and focused at my hummingbird feeder, and ran the cord into the house. Now I can sit in the house out of sight, and take pictures of the birds at the feeder without scaring them, and without suffering the elements. In the winter it will be the other feeder and chickadees, and a multitude of other little critters. Also I can remove the 25 feed of extension cable and have a very normal remote for other photo activities. Thanks P.O.T.N. (This is not a paid advertisement)