1.2 - 1.5:1 throw ratio, project 1000-inch image from over 25m away with the BX-CTA20 lens Designed for the Optoma ZU1700, ZU1900, ZU2200 Ultra Bright DuraCore laser projectors 1.25x Motorized Zoom allows for a simplified and flexible setup Full Motorized Zoom, Focus, and Lens memory simplify any installation. The BX-CTA20 motorized lens is ideal for a variety of rental and permanent installation applications, including the entertainment and museum sectors.This lens has a throw ratio of 1.2 - 1.5:1 and can produce an image size of 50" up to 1000".