This middle throw zoom lens is ideal for projecting large, high-quality images. Supports screen sizes from 50” to 1000". 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; 1.8 to 2.4 F-number; 55.4 mm to 83.3 mm focal length Zoom ratio — 1 – 1.5. Weight — 4.9 lbs (2200 g). Up to 8,500- lumen projectors — WUXGA/WXGA 3.32 to 5.06 throw ratio; lens shift—vertical: -67 percent to +67 percent, horizontal: -30 percent to +30 percent 9,000- to 20,000- lumen projectors — WUXGA 2.42 to 3.71 throw ratio; lens shift—vertical: -60 percent to +60 percent horizontal: -18 percent to +18 percent. Native 4K projector — 2.34 to 3.59 throw ratio; Vertical: -58 percent to +58 percent Horizontal: -16 percent to +16 percent