Perfect for use with a shoulder rig to pull focus without taking your hand off the grip, the Manfrotto Clamp-On Remote Control for DSLRs provides smooth focus control, recording, and other options at the equick push of a button. Simply plugs into your Canon DSLR’s USB port. Compatible with the Canon EOS 5D Mark ii, EOS 1D Mark iV, EOS 7D, EOS 60D, EOS 600D/Rebel T3i/Kiss x5, EOS 550D/Rebel T2i/Kiss x4 and EOS 500D/Rebel T1i/Kiss x3.