This is Shutter Release for Canon 1Ds 1D 5D Mark II III RS-3002. High quality assurance. With the remote control， you can control the shutter of your camera from far away. Energy-saving design allows long battery life usage. Good choice for you!                                    Features            Compatible with CANON RS-3002 Shutter Release<br>The release button reacts fast and fine<br>Lock the button for long exposures or continuous shooting<br>Two stage release button: Halfway pressing for autofocus， complete pressing takes the picture<br>                                                            Specifications            Color    black    <br>Cord Length    35.4"/ 90cm    <br>Weight    30g / 1.06oz    <br>                                                            Package Includes            1 x Shutter Release for Canon 1Ds 1D 5D Mark II III RS-3002<br>                                                            Extra Info            Compatibility: Canon EOS Digital SLR 1D， 1D Mark II， 1D Mark II N， 1D Mark III 1Ds， 1Ds Mark II， 1Ds Mark III 5D， 5D Mark II 10D 20D 30D， 40D， 50D D30 D60 D2000 Canon EOS Film SLR 1V 1VHS 3 KODAK DSC-530 <br><br>Operational InstructionTake out the the camera's remote-control terminal cover<br>Firmly insert the plug of the remote shutter into the camera's remote control terminal and turn your camera on<br>Press the shutter complete down and slide it forward will lock the shutter. This is particular useful when you need to use long time exposure (bulb)<br>The remote shutter works in two levels: press the shutter halfway down to achieve focus， you will hear the focus beep and see the focus indicator in your camera's viewfinder; press the shutter complete down to activate shutter release<br>