FEATURES:
1.This Remote Switch is a very simple device - it simply plugs into the side of compatible (there are many) Canon EOS Digital SLR cameras.
2. Compatible cameras include the Canon EOS-1D, 1Ds, 1DS MARK II, 1DS Mark III, 1D Mark II, 1D Mark III, 5D, 10D, 20D, 30D, 40D, D30, D60.
3.There is one button on the RS-80N3 Remote Switch. Like the camera's shutter release, the RS-80N3 supports a half-press or full press - which releases the shutter.
3. In addition, the remote release button slides forward while pressed in - this will lock the shutter open in B (Bulb) mode.