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Positioning your projector14
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 57 for the center of lens dimensions of this projector
before calculating the appropriate position.
MX720
The screen aspect ratio is 4:3 and the projected picture is 4:3
For example, if you are using an 120-inch screen, the recommended projection distance is
4400 mm and the vertical offset is 91 mm.
If your measured projection distance is 6.0 m (6000 mm), the closest match in the
"Distance from screen (mm)" column is 5500 mm. Looking across this row shows that a
150'' (about 3.8 m) screen is required.
Screen size
Size of the
projected image
Distance from screen (mm)
Vertical
offset
(mm)
Diagonal
W
(mm)
H
(mm)
Min length
Average
Max length
Inch mm
(max.
zoom)
(min. zoom)
40 1016 813 610 1333 1467 1600 30
50 1270 1016 762 1667 1833 2000 38
60 1524 1219 914 2000 2200 2400 46
70 1778 1422 1067 2333 2567 2800 53
80 2032 1626 1219 2667 2933 3200 61
90 2286 1829 1372 3000 3300 3600 69
100 2540 2032 1524 3333 3667 4000 76
120 3048 2438 1829 4000 4400 4800 91
150 3810 3048 2286 5000 5500 6000 114
200 5080 4064 3048 6667 7333 8000 152
250 6350 5080 3810 8333 9167 10000 191
300 7620 6096 4572 10000 11000 12000 229
Maximum zoom
Minimum zoom
Projection distance
Center of lens
Screen
Vertical offset