BenQ MS504, MX505 user manual Obtaining a preferred projected image size, Projection dimensions

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.

4:3 Screen diagonal

H
W	Vertical offset

Screen

Center of lens

Projection distance

The screen aspect ratio is 4:3 and the projected picture is 4:3

	Screen size			Distance from screen (mm)
Diagonal				Min		Max	Vertical
				length		length	offset
		W (mm)	H (mm)		Average
Inch	mm			(max.		(min.	(mm)
				zoom)		zoom)
30	762	610	457	1134	1191	1247	46
40	1016	813	610	1512	1587	1663	61
50	1270	1016	762	1890	1984	2079	76
60	1524	1219	914	2268	2381	2494	91
80	2032	1626	1219	3024	3175	3326	122
100	2540	2032	1524	3780	3968	4157	152
120	3048	2438	1829	4535	4762	4989	183
150	3810	3048	2286	5669	5953	6236	229
200	5080	4064	3048	7559	7937	8315	305
220	5588	4470	3353	8315	8731	9146	335
250	6350	5080	3810	9449	9921	10394	381
300	7620	6096	4572	11339	11905	12472	457

For example, if you are using an 120-inch screen, the recommended projection distance is 4762 mm and the vertical offset is 183 mm.

If your measured projection distance is 6.0 m (6000 mm), the closest match in the "Distance from screen (mm)" column is 5953 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