Epson 5350 EN - Manual (Page 73)

Positioning the Projector 65
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:
❐ 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