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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 55 for the center of lens dimensions of this projector
before calculating the appropriate position.
The screen aspect ratio is 16:10 and the projected picture is 16:10
For example, if you are using an 120-inch screen, the recommended projection distance is
1263 mm and the vertical offset is 18 mm.
If your measured projection distance is 2.5 m (2500 mm), the closest match in the
"Distance from screen (mm)" column is 2526 mm. Looking across this row shows that a
240'' (about 6.1 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.
Screen size
Distance from screen (mm)
Vertical
offset
(mm)
Diagonal
W
(mm)
H
(mm)
Inch mm
80 2032 1723 1077 842 54
100 2540 2154 1346 1053 67
120 3048 2585 1615 1263 81
150 3810 3231 2019 1579 101
180 4572 3877 2423 1895 121
200 5080 4308 2692 2105 135
220 5588 4739 2962 2316 148
240 6096 5169 3231 2526 162
270 6858 5816 3635 2842 182
300 7620 6462 4039 3158 202
Screen size
Projection distance
Center of lens
Screen
Vertical offset
H
W