Pixel Wired remote Shutter Release Control compatible with CANON TC-80N3, fits Canon EOS 7D, 5D Mark II, 5D, 1D, 1D Mark II, 1D Mark III, 1D Mark IV, 1Ds, 1Ds Mark II, 50D, 40D, 30D, 20D, 10D, D60, D30, D2000, This Remote Control is a replacement for CANON TC-80N3 Fits Canon EOS 7D, 5D Mark II, 5D, 1D, 1D Mark II, 1D Mark III, 1D Mark IV, 1Ds, 1Ds Mark II, 50D, 40D, 30D, 20D, 10D, D60, D30, D2000 Two stage release button: halfway pressing for auto focus, complete pressing takes the picture Lock the button for long exposures or continuous shooting