... same as CANON RS-80N3 YONGNUO Remote SwitchBefore Proceeding,insert the plug into the cameras remote control socket with the mark on plug ... aperture settings.2,Pressing it completely takes the picture.3,For long exposures or continuous shooting ,press the release button completely ... /D3O/D60EOS 1D/1DS/1DSMK2EOS 10D/20D/30D/5D YONGNUO Remote Control Switch RS-C3 For Canon 5DII