Calculating Image Size And Projection Distance - Epson PowerLite 5350 User Manual

Calculating Image Size and Projection Distance

The distance between the projector and the screen determines the
actual image size. To determine the exact distance required for a
particular image size (or to determine the size of an image at a
particular distance), use the formulas given below. (Remember that
the size of the image can be changed by rotating the zoom ring; see
page 68 for more information.)
To determine the minimum and maximum diagonal size of an image
when you know the projection distance:
To determine the projection distance when you know the diagonal size
of the screen image:
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
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
Positioning the Projector
65