Benq Projector MW851UST Manuel D’Utilisation

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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.
MX850UST: For example, if you are using an 120-inch screen, the recommended projection 
distance is 1069 mm and the vertical offset is 457.2 mm.
If your measured projection distance is 0.9 m (900 mm), the closest match in the 
 column is 884 mm. Looking across this row shows that a 100'' (about 
2.5 m) screen is required.
MW851UST: For example, if you are using an 120-inch screen, the recommended 
projection distance is 896 mm and the vertical offset is 355.4 mm.
If your measured projection distance is 0.9 m (900 mm), the closest match in the 
 column is 896 mm. Looking across this row shows that a 120'' (about 
3.0 m) screen is required.
Projection dimensions 
Refer to 
 for the center of lens dimensions of this projector before 
calculating the appropriate position.
MX850UST
Screen Size
Distance from Screen in mm
Vertical offset in mm
Diagonal
(mm)
(mm)
Inches
mm
50
1270
1016
762
421
190.5 
60
1524
1219
914
514
228.6 
70
1778
1422
1067
606
266.7 
80
2032
1626
1219
699
304.8 
90
2286
1829
1372
791
342.9 
100
2540
2032
1524
884
381.0 
120
3048
2438
1829
1069
457.2 
150
3810
3048
2286
1347
571.5 
200
5080
4064
3048
1810
762.0 
220
5588
4470
3353
1995
838.2 
240
6096
4877
3658
2180
914.4 
260
6604
5283
3962
2365
990.6 
280
7112
5690
4267
2551
1066.8 
300
7620
6096
4572
2736
1143.0 
Screen Size
Projection distance
Center of lens
Screen
Vertical offset