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Positioning your projector 15
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 56 for the center of lens dimensions of this projector before
calculating the appropriate position.
MX818ST/MX819ST
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
1481 mm and the vertical offset is 274 mm.
If your measured projection distance is 2.5 m (2500 mm), the closest match in the "(b)
Distance from screen" column is 2469 mm. Looking across this row shows that a 200''
(about 5.1 m) screen is required.
(a)
(b)
Center of lens
Screen
(c)
(a) Screen size
(b) Distance from screen
(mm)
(c) Vertical offset
(mm)
Diagonal
Height
(mm)
Width
(mm)
Inches mm
80 2032 1219 1626 988 183
100 2540 1524 2032 1235 229
120 3048 1829 2438 1481 274
150 3810 2286 3048 1852 343
180 4572 2743 3658 2222 411
200 5080 3048 4064 2469 457
220 5588 3353 4470 2716 503
240 6096 3658 4877 2963 549
270 6858 4115 5486 3333 617
300 7620 4572 6096 3704 686