The ZEISS 28-80mm T2.9 Compact Zoom CZ.2 Lens with EF Mount is a standard zoom lens that is optimized for motion picture production. The lens offers full-frame (36 x 24 mm) coverage and exhibits no focus shift over the zoom range. The cine-style housing features calibrated focus scales and industry standard gearing for focus, iris and zoom. At 7.72″ long and with a weight of 5.5 lb, the 28-80mm is relatively compact and lightweight, which makes it ideal for handheld and Steadicam applications. The lens features a built-in lens support post, with 3/8″ threading for use with available lens supports.