Epson EPL7250 User Manual - Page 73
Calculating Image Size and Projection Distance, Inches, Centimeters
UPC - 010343820852
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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 Positioning the Projector 65