3M MP8750 manual Image Size Projector-to-Screen Distance, Image Height

3-5. Image Size (Projector-to-Screen Distance)

Adjust the size of the projected image using the zoom control buttons. The projected image size values, as they relate to the distance-to-screen value, are shown for focal lengths of f=25mm and f=45mm. Also shown is the maximum image height shift value that can vary depending on the focal length and the distance-to-screen. Figure 3.4.

	Maximum (f=25mm)			Minimum (f=45mm)
Distance to Screen
	Image	Image	Max	Image	Image	Max
m (ft.)	Width	Height	Height	Width	Height	Height
	m (in.)	m (in.)	m (in.)	m (in.)	m (in.)	m (in.)
2.00	1.42	1.06	.43	.80	.60	.24
(6.56)	(56)	(41.7)	(16.9)	(31.5)	(23.6)	(9.5)
2.50	1.76	1.32	.54	.99	.74	.30
(8.2)	(69.3)	(52)	(21.3)	(39)	(29.1)	(11.8)
3.00	2.11	1.57	.64	1.18	.89	.36
(9.84)	(83.1)	(61.8)	(25.2)	(46.5)	(35)	(14.2)
5.00	3.48	2.60	1.06	1.96	1.47	.60
(16.4)	(137)	(102.4)	(41.7)	(77.2)	(57.9)	(23.6)
7.00	4.85	3.62	1.47	2.73	2.05	.83
(22.97)	(191)	(142.5)	(57.9)	(107.5)	(80.71)	(32.7)
10.00	6.90	5.16	2.10	3.88	2.92	1.18
(32.81)	(271.7)	(203.2)	(82.7)	(152.8)	(115)	(46.5)

Figure 3.4. Image Size/Maximum Image Height

3-6. Image Height

Use the Picture menu/Height option to shift (upward) the projected image. The center of the projected image can be shifted a maximum of 12 degrees without incurring any keystoning. Figure 3.5.

12 Degree Maximum Shift

Figure 3.5. Maximum Image Shift

6 3M™ Multimedia Projector MP8750 © 3M 1999