Connecting cable is interchangeable. Suitable for all digital SLRs with different connecting cables. * Support single shooting, continuous shooting and long exposure (Bulb mode) shooting, push button forward to lock. * Compatible with Canon EOS 1D,1Ds,1D Mark II, III, IV, 1Ds Mark II, III, IV, 7D, 5D, 5D Mark II, 50D, 40D, 30D, 20D, 10D * Control autofocus and shutter triggering. Capture images without camera shake. * Use for continuous or single exposures. No battery required-powered by camera.