Neewer Remote Control Shutter Release Cord Replacement for RS-80N for Canon EOS 1V / EOS 3 / 1D / 1DS / 1DS MARK 2 II / 10D 20D / 30D / 40D / 5D / 5D MARK 2 II / D30 / D60 Helps in preventing vibration during long exposures, close ups, or continuous shooting. Perfect to use during taking time-lapse photography and long time exposure. Two stage release button: 1. Halfway pressed button - For auto-focus and exposure metering. Color: Black Length: Approx. 1m Plug and Play