BenQ MW811ST, MX812ST user manual

C(a)

Screen

(c)

Center of lens

(b)

Table C: The screen aspect ratio is 16:10 and the projected picture is 16:10

	(a) Screen size			Projected picture size		(b) Distance	(c) Vertical
Diagonal		Height	Width	Height	Width	from screen	offset
Inches	mm	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)
50	1270	673	1077	673	1077	526	34
80	2032	1077	1723	1077	1723	842	54
100	2540	1346	2154	1346	2154	1053	67
120	3048	1615	2585	1615	2585	1263	81
150	3810	2019	3231	2019	3231	1579	101
180	4572	2423	3877	2423	3877	1895	121
200	5080	2692	4308	2692	4308	2105	135
220	5588	2962	4739	2962	4739	2316	148
240	6096	3231	5169	3231	5169	2526	162
270	6858	3635	5816	3635	5816	2842	182
300	7620	4039	6462	4039	6462	3158	202

For example, if you are using a 120-inch, 4:3-aspect-ratio screen and the projected picture is 16:10, please refer to Table B2 on page 17, the recommended projection distance is 1192 mm and the vertical offset is 76 mm.

If you need a 16:9 screen to project a 16:9 picture and your measured projection distance is

1.5m (1500 mm), please refer to Table A1 on page 16. The closest match in the "(b) Distance from screen" column is 1623 mm. Looking across this row shows that a 150'' (about 3.8 m) screen is required.

There is 3% tolerance among these numbers due to optical component variations. 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.

18 Positioning your projector