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* The focusing distance of the zoom lens is from 4 feet to infinity.
Table 1:
Image Size, Width and Height for Varifocal Lens
and Zoom Lens at Minimum Focusing Distance
Distance to
Screen (feet)
Diagonal
(inches)
Width
(inches)
Height
(inches)
4 34 27 20.4
10 84 67 50.4
15 126 101 75.6
20 168 134 100.8
25 210 168 126.
30 252 202 151.2
35 294 235 176.4
40 336 269 201.6
Table 2:
Image Size, Width and Height for Zoom Lens at
Maximum Focusing* Distance
Distance to
Screen (feet)
Maximum
Diagonal
(inches)
Maximum
Width
(inches)
Maximum
Height
(inches)
4483828.8
10 120 96 72
15 180 144 108
20 240 192 144
25 300 240 180
30 360 288 216
35 420 336 252
40 480 384 288