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Positioning your projector14
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 52 for the center of lens dimensions of this projector
before calculating the appropriate position.
The screen aspect ratio is 4:3 and the projected picture is 4:3
For example, if you are using an 120-inch screen, the recommended projection distance is
4762 mm and the vertical offset is 183 mm.
If your measured projection distance is 6.0 m (6000 mm), the closest match in the
"Distance from screen (mm)" column is 5953 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.
Screen size Distance from screen (mm)
Vertical
offset
(mm)
Diagonal
W (mm) H (mm)
Min
length
Average
Max
length
Inch mm
(max.
zoom)
(min.
zoom)
30 762 610 457 1134 1191 1247 46
40 1016 813 610 1512 1587 1663 61
50 1270 1016 762 1890 1984 2079 76
60 1524 1219 914 2268 2381 2494 91
80 2032 1626 1219 3024 3175 3326 122
100 2540 2032 1524 3780 3968 4157 152
120 3048 2438 1829 4535 4762 4989 183
150 3810 3048 2286 5669 5953 6236 229
200 5080 4064 3048 7559 7937 8315 305
220 5588 4470 3353 8315 8731 9146 335
250 6350 5080 3810 9449 9921 10394 381
300 7620 6096 4572 11339 11905 12472 457
H
W
Projection distance
Center of lens
Screen
Vertical offset
4:3 Screen diagonal