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2 • Using the Projector
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For example, here are the measurements for three installations:
* For an image size of 300 inches, the projector may be up to 54 feet away from
the screen, depending on the setting of the zoom ring.
Long Throw Zoom Lens Calculations
If you are using the optional long throw zoom lens, use the following
formulas instead:
To determine the minimum and maximum diagonal size of an image
when you know the projection distance:
❐ Inches:
Maximum diagonal size = (0.4742 × projection distance) + 3.2489
Minimum diagonal size = (0.2849 × projection distance) + 1.8968
❐ Centimeters:
Maximum diagonal size = (1.2045 × projection distance) + 8.2522
Minimum diagonal size = (0.7236 × projection distance) + 4.8179
Image size (diagonal)
Horizontal distance from projector to screen
Minimum Maximum
300 inches* (762 cm) 487.3 inches (12.4 m) 656.0 inches (16.7 m)
200 inches (508 cm) 324.1 inches (8.2 m) 436.5 inches (11.1 m)
100 inches (254 cm) 160.8 inches (4.1 m) 217.1 inches (5.5 m)