Middle-throw zoom lens for positioning flexibility. This middle throw zoom lens is ideal for projecting large, high-quality images. Supports screen sizes up to 1000". This is the standard throw lens for Pro L projectors from 9,000 to 20,000 lumens. Interchangeable lens — for Pro L projectors up to 20,000 lumens and Pro G7000 Series projectors Wide lens shift — for added flexibility High-quality design — up to 1000" screen size support; 2.0 to 2.1 F-number; 14.8 mm to 17.7 mm focal length Zoom ratio — 1 to 1.6 Weight — 4.2 lbs (1900 g) Up to 8,500-lumen projectors — WUXGA/WXGA 2.16 to 3.48 throw ratio; lens shift—vertical: -67 percent to +67 percent, horizontal: -30 percent to +30 percent 9,000- to 20,000-lumen projectors — WUXGA 1.57 to 2.56 throw ratio; lens shift—vertical: -60 percent to +60 percent, horizontal: -18 percent to +18 percent Native 4K projector — 1.52 to 2.47 throw ratio; vertical: -58 percent to +58 percent, horizontal: -16 percent to +16 percent