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Positioning your projector 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.
For example, if you are using an 120-inch screen, the recommended projection distance is
715 mm and the vertical offset is 320 mm.
If your measured projection distance is 0.9 m (900 mm), the closest match in the "Distance
from Screen in mm" column is 902 mm. Looking across this row shows that a 150'' (about
3.8 m) screen is required.
Projection dimensions
Refer to "Dimensions" on page 69 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 in mm Vertical offset in mmDiagonal W
(mm)
H
(mm)
Inches mm
70 1778 1422 1067 404 186.7
80 2032 1626 1219 467 213.4
90 2286 1829 1372 529 240.0
100 2540 2032 1524 591 266.7
120 3048 2438 1829 715 320.0
150 3810 3048 2286 902 400.1
200 5080 4064 3048 1213 533.4
220 5588 4470 3353 1337 586.7
240 6096 4877 3658 1462 640.1
Screen Size
Projection distance
Center of lens
Screen
Vertical offset
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