Photive PH-RS80N3 Remote Shutter Release Cable For EOS 7D, 5D Mark II, 1D Series (Canon RS-80N3 Replacement) Canon RS-80N3 Replacement Compatibe with Canon EOS 7D, 5D, 5D Mark II, 1DS MARK II, 1DS Mark III, 1D Mark II, EOS-3, 1V HS /1V,10D, 20D, 30D, &amp; 40D, 50D cameras Two-Stage shutter button- Halfway Press activates autofocus. Full Pess Takes the picture. Replicates functions of the camera's shutter button. 1 Year Warranty