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 mm
Diagonal
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
