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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
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 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 (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