Neewer DSLR Camera Shutter Release 320ft/100m Wireless Remote Control 2.4G 16CH Transmitter Receiver for Canon EOS 7D/5D Series/1D/6D/50D/40D/30D/20D/10D 2.4GHz 16 channels transmitter receiver. Operating distance can reach up to 320ft/100m. Half-pressing to auto focus; Full-pressing to trigger shutter. You can change different shutter release cable to work with different cameras. Support single shooting, continuous shooting, bulb shooting, delay shooting.