BenQ MP620p user manual Screen Diagonal, Feet, Inches

Maximum zoom Minimum zoom

Offset

Screen Center of lens

Projection distance

4:3 Screen Diagonal			Distance from Screen in mm			Vertical Offset in mm
Feet	Inches	mm	Min length	Average	Max length
			(with max.		(with min.
			zoom)		zoom)
4	48	1219	1745	1876	2007	18
		1500	2148	2199	2250	23
5	60	1524	2182	2345	2509	23
6	72	1829	2618	2815	3011	27
		2000	2863	3078	3293	30
7	84	2134	3055	3284	3513	32
8	96	2438	3491	3753	4015	36
		2500	3579	3848	4116	38
9	108	2743	3927	4222	4516	41
		3000	4295	4617	4939	45
10	120	3048	4364	4691	5018	46
		3500	5011	5387	5763	53
12	144	3658	5236	5629	6022	55
		4000	5727	6157	6586	60
15	180	4572	6545	7036	7527	69
		5000	7158	7695	8232	75
18	216	5486	7855	8444	9033	82
		6000	8590	9234	9878	90
25	300	7620	10909	11727	12545	114

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

14 Positioning your projector