... It can prevents the camera vibration,for macro photography Remote SLR Shutter Release Switch Cable For Canon EOS 1000D 450D 350D ... Product DescriptionYou can use this shutter release cable to control the shutter easily.It can prevents the camera ... to lock for bulb photography or continuous shooting.Compatible with: CANON EOS 1000D, 500D, 450D, 400D, 350D, 300D,300V, 50E, ...