BenQ BenQ MW665 Wireless Network Projector User Manual - Page 17

Obtaining a preferred projected image size The distance from the projector lens to the screen, the zoom setting, and the video format each factors in the projected image size. Projection dimensions Refer to "Dimensions" on page 62 for the center of lens dimensions of this projector before calculating the appropriate position. MX666 4:3 Screen diagonal H Screen Center of lens W Vertical offset Projection distance The screen aspect ratio is 4:3 and the projected picture is in a 4:3 aspect ratio Screen size Diagonal Inch mm W (mm) 50 1270 60 1524 70 1778 80 2032 90 2286 100 2540 120 3048 155 3937 200 5080 250 6350 300 7620 1016 1219 1422 1626 1829 2032 2438 3150 4064 5080 6096 H (mm) 762 914 1067 1219 1372 1524 1829 2362 3048 3810 4572 Projection distance (mm) Min distance (max. zoom) Average Max distance (min. zoom) 1538 1769 2000 1846 2123 2400 2154 2477 2800 2462 2831 3200 2769 3185 3600 3077 3538 4000 3692 4246 4800 4769 5485 6200 6154 7077 8000 7692 8846 10000 9231 10615 12000 Vertical offset (mm) 57 69 80 91 103 114 137 177 229 286 343 For example, if you are using an 120-inch screen, the recommended projection distance is 4246 mm and the vertical offset is 137 mm. If your measured projection distance is 5.5 m (5500 mm), the closest match in the "Projection distance (mm)" column is 5485 mm. Looking across this row shows that a 155'' (about 3.9 m) screen is required. Positioning your projector 17