Use the table below to calulate projection distance corresponding to the desired screen size. All measures are given in inches and centimetres.
| viewing size w x h |
nominal screen size
(diagonal) |
projection distance
(to lens in cm / in) |
offset (approx.) |
|
|
standard zoom |
|
| in |
cm |
in |
cm |
min |
max |
cm / in |
| 63 x 35.5 |
160 x 90 |
72 |
184 |
256 / 101 |
320 / 126 |
22 / 9 |
| 72 x 40.5 |
182 x 103 |
82 |
208 |
291 / 115 |
364 / 144 |
26 / 10 |
| 80 x 45 |
203 x 114 |
92 |
234 |
325 / 128 |
406 / 160 |
29 / 11 |
| 87 x 49 |
221 x 125 |
100 |
254 |
354 / 139 |
442 / 174 |
31 / 12 |
| 92 x 52 |
234 x 132 |
106 |
269 |
374 / 147 |
468 / 184 |
33 / 13 |
| 96 x 54 |
244 x 137 |
110 |
280 |
390 / 154 |
488 / 192 |
34 / 14 |
| 104 x 58 |
264 x 147 |
119 |
302 |
422 / 166 |
528 / 208 |
37 / 15 |
|
