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.
Projection dimensions
Refer to
"Dimensions" on page 53
for the center of lens dimensions of this projector before
calculating the appropriate position.
The screen aspect ratio is 4:3 and the projected picture is in a 4:3 aspect ratio
For example, if you are using an 120-inch screen, the recommended projection distance is
1487 mm and the vertical offset is 274 mm.
If your measured projection distance is 2.5 m (2500 mm), the closest match in the
"(b)
Distance from screen"
column is 2479 mm. Looking across this row shows that a 200''
(about 5.1 m) screen is required.
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.
(a)
(b)
Center of lens
Screen
(c)
(a) Screen size
(b) Distance from screen
(mm)
(c) Vertical offset
(mm)
Diagonal
Height
(mm)
Width
(mm)
Inches
mm
60
1524
914
1219
744 137
80
2032
1219
1626
992 183
100
2540
1524
2032
1240 229
120
3048
1829
2438
1487 274
150
3810
2286
3048
1859 343
180
4572
2743
3658
2231 411
200
5080
3048
4064
2479 457
220
5588
3353
4470
2727 503
240
6096
3658
4877
2975 549
270
6858
4115
5486
3346 617
300
7620
4572
6096
3719 686
