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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
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.
Projection dimensions
Refer to "Dimensions" on page 62 for the center of lens dimensions of this projector before
calculating the appropriate position.
There is 3% tolerance among these numbers due to optical component variations.
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)
40 1016 813 610 1231 1415 1600 46
50 1270 1016 762 1538 1769 2000 57
60 1524 1219 914 1846 2123 2400 69
80 2032 1626 1219 2462 2831 3200 91
100 2540 2032 1524 3077 3538 4000 114
120 3048 2438 1829 3692 4246 4800 137
150 3810 3048 2286 4615 5308 6000 171
200 5080 4064 3048 6154 7077 8000 229
220 5588 4470 3353 6769 7785 8800 251
250 6350 5080 3810 7692 8846 10000 286
300 7620 6096 4572 9231 10615 12000 343
Maximum zoom Minimum zoom
Projection distance
Center of lens
Screen
Vertical offset
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