RS-802/DC0 surface using wire drawing effect, more reveal texture. Half a press or press the shutter control. Half the focus, all according to the pictures, and with a lock button. Support single shoot, shoot, support long exposure time. Using polymeric plastic materials, more waterproof, prevent grind, security falls. Take the lock button, more convenient and practical. Release: Focus and shoot two button, lock button can continuous shooting and long exposure time. Half pressing: the camera focus. Full pressing; camera shoot. The lock button: continuous shooting/bulbs.