Epson ELP-7300 User Manual - Page 70
Long Throw Zoom Lens Calculations
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Long Throw Zoom Lens Calculations If you are using the optional long throw zoom lens, use the following formulas instead: To determine the minimum and maximum diagonal size of an image when you know the projection distance: q Inches: Maximum diagonal size = (0.4742 × projection distance) + 3.2489 Minimum diagonal size = (0.2849 × projection distance) + 1.8968 q Centimeters: Maximum diagonal size = (1.2045 × projection distance) + 8.2522 Minimum diagonal size = (0.7236 × projection distance) + 4.8179 To determine the projection distance when you know the diagonal size of the screen image: q Inches: Maximum projection distance = (3.5094 × diagonal size) - 6.6568 Minimum projection distance = (2.1090 × diagonal size) - 6.8519 q Centimeters: Maximum projection distance = (8.9139 × diagonal size) - 16.9083 Minimum projection distance = (5.3569 × diagonal size) - 17.4038 62 2 • Using the Projector
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