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Positioning the Projector
61
To determine the minimum and maximum diagonal size of an image
when you know the projection distance:
● Inches:
Maximum diagonal size = (0.6124 × projection distance) + 1.5264
Minimum diagonal size = (0.4556 × projection distance) + 1.1410
● Centimeters:
Maximum diagonal size = (0.6124 × projection distance) + 3.8771
Minimum diagonal size = (0.4556 × projection distance) + 2.8981
To determine the projection distance when you know the diagonal size
of the screen image:
● Inches:
Maximum projection distance = (2.1949 × diagonal size) - 2.5044
Minimum projection distance = (1.6328 × diagonal size) - 2.4923
● Centimeters:
Maximum projection distance = (2.1949 × diagonal size) - 6.3612
Minimum projection distance = (1.6328 × diagonal size) - 6.3304
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.
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)
5300.book Page 61 Tuesday, April 13, 1999 4:19 PM