The Phottix wired remote control is a compact remote control that replicates all the functions of the camera shutter button. This remote control makes it easy to take photos with long exposure times. A half press of the shutter button will activate focus, while a full press will trigger the shutter. The shutter button can be locked for shooting in bulb “B”. Very compact, the remote control is extremely robust and light. Cable length: 1 meter Compatible with Sony A100/A200/A300/A350/A700/A900, Minolta Dynax 7D/5D/Dynax 9, 7,5, 4, 3 Dynax 807si, 800si, 700si, 600si, 505si