The ET-C1U200 / 0.38 :1 Ultra-Short-Throw Projector Lens from Panasonic is an optional lens for the PT-REQ and PT-REZ series projectors. Providing an ultra-short 0.380:1 (TBD) throw ratio, the ET-C1U100 can help you bring your projector closer to the screen where needed, helping you achieve a large image in a tight space. For example, this zoom lens can fill a 200″ diagonal 16:9 or 16:10 aspect ratio screen with a distance of just 4.5′ between the lens and the projection surface.