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© 3M 1999
3M
™
Multimedia Projector MP8780
TECHNICAL
A-3
✔
Note
These sizes are
±
1%. This is due to variations in the manufacture of the lens. If you are close to one of the
endpoints you should verify with your unit that the image is the proper size at the proper distance.
A.3 Projector-to-Screen Distance
Example of the Multimedia projector and screen installation. Determine picture size and projection distance as
shown below.
Screen Size
Distance to Screen
Width
Height
Diagonal
Minimum
Maximum
81 cm
61 cm
102 cm
145 cm
226 cm
(32 in.)
(24 in.)
(40 in.)
(4.7 ft)
(7.4 ft)
130 cm
91 cm
152 cm
226 cm
347 cm
(48 in.)
(36 in.)
(60 in.)
(7.4 ft)
(11.4 ft)
180 cm
122 cm
203 cm
306 cm
468 cm
(64 in.)
(48 in.)
(80 in.)
(10 ft)
(15.3 ft)
230 cm
152 cm
254 cm
386 cm
588 cm
(80 in.)
(60 in.)
(100 in.)
(12.7 ft)
(19.3 ft)
280 cm
183 cm
305 cm
467 cm
709 cm
(96 in.)
(72 in.)
(120 in.)
(15.3 ft)
(23.3 ft)
354 cm
229 cm
381 cm
587 cm
890 cm
(120 in.)
(90 in)
(150 in.)
(19.3 ft)
(29.2 ft)
179 cm
305 cm
508 cm
788 cm
1193 cm
(160 in.)
(120 in.)
(200 in.)
(25.8 ft)
(39.1 ft)
728 cm
457 cm
762 cm
1190 cm
1197 cm
(287 in.)
(180 in.)
(300 in.)
(39 ft)
(58.9 ft)
The image can be shifted up or down without distortion (keystoning) by turning the Image Shift Control knob on
the top of the projector.
Image Shift Control
Normal
Shift Down
(Ceiling Mount)
Shift Up
O I