BenQ MX570 User Manual Page 14

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Positioning your projector14
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 52 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
4243 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 5304 mm. Looking across this row shows that a
150'' (about 3.8 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.
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)
30 762 610 457 920 1061 1201 34
40 1016 813 610 1227 1414 1601 46
50 1270 1016 762 1534 1768 2002 57
60 1524 1219 914 1841 2121 2402 69
80 2032 1626 1219 2455 2829 3202 91
100 2540 2032 1524 3068 3536 4003 114
120 3048 2438 1829 3682 4243 4804 137
150 3810 3048 2286 4602 5304 6005 171
200 5080 4064 3048 6137 7071 8006 229
250 6350 5080 3810 7671 8839 10008 286
300 7620 6096 4572 9205 10607 12009 343
H
W
Projection distance
Center of lens
Screen
Vertical offset
4:3 Screen diagonal
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