Epson EPL7250 User Manual - Page 75

To determine the projection distance when you know the diagonal size of the screen image: ❐ Inches: Maximum projection distance = (3.5094 × diagonal size) - 6.6568 Minimum projection distance = (2.1090 × diagonal size) - 6.8519 ❐ Centimeters: Maximum projection distance = (8.9139 × diagonal size) - 16.9083 Minimum projection distance = (5.3569 × diagonal size) - 17.4038 Fixed Wide Angle Lens Calculations If you are using the optional fixed wide angle 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 = (0.730 × projection distance) + 3.919 Minimum diagonal size = (0.616 × projection distance) + 3.050 ❐ Centimeters: Maximum diagonal size = (1.8542 × projection distance) + 9.9542 Minimum diagonal size = (1.5646 × projection distance) + 7.7470 To determine the projection distance when you know the diagonal size of the screen image: ❐ Inches: Maximum projection distance = (1.619 × diagonal size) - 4.702 Minimum projection distance = (1.367 × diagonal size) - 5.640 ❐ Centimeters: Maximum projection distance = (4.1122 × diagonal size) - 11.9430 Minimum projection distance = (3.4721 × diagonal size) - 14.3256 Positioning the Projector 67