Panasonic ET-EMT850 is a motorized zoom lens designed for Panasonic PT-MZ series large-venue 1-chip LCD projectors. It covers 90.30–162.60 mm focal length with an aperture range of F1.85–F2.39. Throw ratios depend on image aspect: 16:10 4.14–7.40:1; 16:9 4.12–7.40:1; 4:3 4.93–8.90:1. The assembly weighs 4.45 kg and measures 173 × 130 × 336 mm. Lens shift is 0.6V/0.28V vertically and 0.2H horizontally. Focus and zoom are motorized and controlled by the projector.