Benq LW61ST Manuel Du Propriétaire

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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.
Projection dimensions 
Refer to 
 for the center of lens dimensions of this projector 
before calculating the appropriate position.
LX60ST
For example, if you are using a 120-inch screen, the recommended projection distance is 
1481 mm and the vertical offset is 274 mm.
If your measured projection distance is 2.0 m (2000 mm), the closest match in the 
 column is 1852 mm. Looking across this row shows that a 
150'' (about 3.8 m) screen is required.
Screen size
Distance from screen (mm)
Vertical offset 
(mm)
Diagonal
(mm)
(mm)
Inch
mm
80
2032
1626
1219
988
183 
100
2540
2032
1524
1235
229 
120
3048
2438
1829
1481
274 
150
3810
3048
2286
1852
343 
180
4572
3658
2743
2222
411 
200
5080
4064
3048
2469
457 
220
5588
4470
3353
2716
503 
240
6096
4877
3658
2963
549 
270
6858
5486
4115
3333
617 
300
7620
6096
4572
3704
686
Screen size
Projection distance
Center of lens
Screen
Vertical offset