BenQ MX722 MX722 User Manual - Page 15

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 57 for the center of lens dimensions of this projector before calculating the appropriate position. Maximum zoom Minimum zoom Screen Center of lens Vertical offset Projection distance The screen aspect ratio is 4:3 and the projected picture is 4:3: Screen size Diagonal Inch mm W (mm) 40 1016 50 1270 60 1524 70 1778 80 2032 90 2286 100 2540 120 3048 150 3810 200 5080 250 6350 300 7620 813 1016 1219 1422 1626 1829 2032 2438 3048 4064 5080 6096 H (mm) 610 762 914 1067 1219 1372 1524 1829 2286 3048 3810 4572 Distance from screen (mm) Min length Max length (max. zoom) Average (min. zoom) 1231 1415 1600 1538 1769 2000 1846 2123 2400 2154 2477 2800 2462 2831 3200 2769 3185 3600 3077 3538 4000 3692 4246 4800 4615 5308 6000 6154 7077 8000 7692 8846 10000 9231 10615 12000 Vertical offset (mm) 46 57 69 80 91 103 114 137 171 229 286 343 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 5.0 m (5000 mm), the closest match in the "Distance from screen (mm)" column is 5308 mm. Looking across this row shows that a 150'' (about 3.8 m) screen is required. All measurements are approximate and may vary from the actual sizes. BenQ recommends that if you intend to permanently install the projector, you should physically test the projection size and distance using the actual projector in situ before you permanently install it, so as to make allowance for this projector's optical characteristics. This will help you determine the exact mounting position so that it best suits your installation location. Positioning your projector 15