BenQ SP830 - Page 21

Positioning your projector 21
When the screen aspect ratio is 4:3 and the projected picture is 16:9 or 15:9
Table B1: The screen aspect ratio is 4:3 and the projected picture is 16:9
D
A
D
B
C
Maximum zoom Minimum zoom
Projection distance
Center of lens
Screen
Offset
Floor Installation
D
A
D
B
C
Maximum zoom
Minimum zoom
Projection distance
Center of lens
Screen
Offset
Ceiling Installation
Screen Dimensions Projected
picture size
Black
bar (D)
Distance from Screen in
mm
Ve r t ic a l
Offset
Diagonal Height
C
Width
B
Height
A
Width
B
Min
(Max
zoom)
Average Max
(Min
zoom)
Feet Inches mm cm cm cm cm cm mm
2.5 30 762 46 61 34 61 5.7 956.9 1033.4 1110.0 48
4.2 50 1270 76 102 57 102 9.5 1594.8 1722.4 1850.0 80
6.7 80 2032 122 163 91 163 15.2 2551.7 2755.8 2959.9 128
8.3 100 2540 152 203 114 203 19.1 3189.6 3444.7 3699.9 160
10.0 120 3048 183 244 137 244 22.9 3827.5 4133.7 4439.9 192
12.5 150 3810 229 305 171 305 28.6 4784.4 5167.1 5549.9 240
15.0 180 4572 274 366 206 366 34.3 5741.2 6200.5 6659.8 288
16.7 200 5080 305 406 229 406 38.1 6379.2 6889.5 7399.8 320
18.3 220 5588 335 447 251 447 41.9 7017.1 7578.4 8139.8 352
20.0 240 6096 366 488 274 488 45.7 7655.0 8267.4 8879.8 384