The ET-C1W300 0.55-0.69:1 Short-Throw Projector Zoom Lens from Panasonic is an optional lens for the PT-REQ and PT-REZ series projectors. Providing a short-throw option, the ET-C1W300 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-inch diagonal 16:9 or 16:10-aspect screen with less than 10 feet between the lens and the projection surface.