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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.
For example, if you are using an 120-inch screen, the recommended projection distance is
4755 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 5943 mm. Looking across this row shows that a
150'' (about 3.8 m) screen is required.
Projection dimensions
Refer to "Dimensions" on page 52 for the center of lens dimensions of this projector
before calculating the appropriate position.
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 1132 1189 1245 46
40 1016 813 610 1509 1585 1660 61
50 1270 1016 762 1887 1981 2075 76
60 1524 1219 914 2264 2377 2491 91
80 2032 1626 1219 3019 3170 3321 122
100 2540 2032 1524 3774 3962 4151 152
120 3048 2438 1829 4528 4755 4981 183
150 3810 3048 2286 5660 5943 6226 229
200 5080 4064 3048 7547 7925 8302 305
220 5588 4470 3353 8302 8717 9132 335
250 6350 5080 3810 9434 9906 10377 381
300 7620 6096 4572 11321 11887 12453 457
Maximum zoom Minimum zoom
Projection distance
Center of lens
Screen
Vertical offset