BenQ mx618st Obtaining a preferred projected image size, Projection dimensions, Length, Inch

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 54 for the center of lens dimensions of this projector before calculating the appropriate position.

Maximum zoom Minimum zoom

Vertical offset

Screen

Center of lens

Projection distance

	Screen size			Distance from screen (mm)
Diagonal				Min		Max	Vertical
		W		length		length	offset
			H (mm)		Average
Inch	mm	(mm)		(max.		(min.	(mm)
				zoom)		zoom)
40	1016	813	610	734	807	881	30
50	1270	1016	762	917	1009	1101	38
60	1524	1219	914	1101	1211	1321	46
80	2032	1626	1219	1468	1615	1761	61
100	2540	2032	1524	1835	2018	2202	76
120	3048	2438	1829	2202	2422	2642	91
150	3810	3048	2286	2752	3028	3303	114
200	5080	4064	3048	3670	4037	4404	152
220	5588	4470	3353	4037	4440	4844	168
250	6350	5080	3810	4587	5046	5505	191
300	7620	6096	4572	5505	6055	6606	229

For example, if you are using an 120-inch screen, the recommended projection distance is 2422 mm and the vertical offset is 91 mm.

If your measured projection distance is 3.0 m (3000 mm), the closest match in the "Distance from screen (mm)" column is 3028 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.

14 Positioning your projector