The Sigma CR-31 Cable Release for DP2 Quattro Digital Camera is a specially designed cable that helps in enabling the shutter release without touching the camera. This dedicated cable release can be attached to the camera’s USB terminal with ease and conveniently operated at a distance. Additionally, this accessory comes handy during the operation of slow shutter speed or when the camera is attached to a tripod. One of the great advantages of this cable release is that it helps in preventing the image blur. With an approximate cable length of one meter, it is very convenient to operate at a distance.