Relationship Between Screen Size And Projection Distance - Canon SX20 User Manual

Relationship between Screen Size
and Projection Distance
Screen size at 4:3
aspect ratio
W x D (cm)
40 81 x 61
50 102 x 76
60 122 x 91
70 142 x 107
80 163 x 122
90 183 x 137
100 203 x 152
110 224 x 168
120 244 x 183
130 264 x 198
140 284 x 213
150 305 x 229
160 325 x 244
170 345 x 259
176 358 x 268
180 366 x 274
182 370 x 277
190 386 x 290
200 406 x 305
210 427 x 320
220 447 x 335
230 467 x 351
240 488 x 366
250 508 x 381
260 528 x 396
270 549 x 411
280 569 x 427
290 589 x 442
300 610 x 457
Zoomed projection distance
Max. Min.
2.0 m 1.2 m
(6.6 ) (3.9 )
2.5 m 1.5 m
(8.2 ) (4.9 )
3.0 m 1.8 m
(9.8 ) (5.9 )
3.5 m 2.1 m
(11.5 ) (6.9 )
4.0 m 2.4 m
(13.1 ) (7.9 )
4.5 m 2.7 m
(14.8 ) (8.9 )
5.0 m 3.0 m
(9.8 )
(16.4 )
5.5 m 3.3 m
(10.8 )
(18.0 )
6.0 m 3.6 m
(11.8 )
(19.7 )
6.5 m 3.9 m
(21.3 ) (12.8 )
7.0 m 4.2 m
(23.0 ) (13.8 )
7.5 m 4.5 m
(24.6 ) (14.8 )
8.0 m 4.8 m
(26.2 ) (15.7 )
8.5 m 5.1 m
(27.9 ) (16.7 )
8.8 m 5.3 m
(28.9 ) (17.4 )
9.0 m 5.4 m
(29.5 ) (17.7 )
9.1 m 5.5 m
(29.9 ) (18.0 )
5.7 m
-
(18.7 )
6.0 m
-
(19.7 )
6.3 m
-
(20.7 )
6.6 m
-
(21.7 )
7.0 m
-
(23.0 )
7.3 m
-
(24.0 )
7.6 m
-
(24.9 )
7.9 m
-
(25.9 )
8.2 m
-
(26.9 )
8.5 m
-
(27.9 )
8.8 m
-
(28.9 )
9.1 m
-
(29.9 )
H1 H2
55 cm 6 cm
(1.8 ) (0.2 )
69 cm 8 cm
(2.3 ) (0.26 )
82 cm 9 cm
(2.7 ) (0.3 )
96 cm 11 cm
(3.1 ) (0.36 )
110 cm 12 cm
(3.6 ) (0.4 )
123 cm 14 cm
(4.0 ) (0.46 )
137 cm 15 cm
(4.5 ) (0.49 )
151 cm 17 cm
(5.0 ) (0.56 )
165 cm 18 cm
(5.4 ) (0.59 )
178 cm 20 cm
(5.8 ) (0.66 )
192 cm 21 cm
(6.3 ) (0.69 )
206 cm 23 cm
(6.8 ) (0.75 )
219 cm 24 cm
(7.2 ) (0.79 )
233 cm 26 cm
(7.6 ) (0.85 )
241 cm 27 cm
(7.9 ) (0.86 )
247 cm 27 cm
(8.1 ) (0.86 )
250 cm 28 cm
(8.2 ) (0.9 )
261 cm 29 cm
(8.6 ) ( 0.95 )
274 cm 30 cm
(9.0 ) ( 0.98 )
288 cm 32 cm
(9.4 ) ( 1.05 )
302 cm 34 cm
(9.9 ) ( 1.12 )
315 cm 35 cm
(10.3 ) ( 1.15 )
329 cm 37 cm
(10.8 ) ( 1.21 )
343 cm 38 cm
(11.3 ) ( 1.25 )
357 cm 40 cm
(11.7 )
( 1.31 )
370 cm 41 cm
(12.1 ) ( 1.35 )
384 cm 43 cm
(12.6 ) ( 1.41 )
398 cm 44 cm
(13.1 ) ( 1.44 )
411 cm 46 cm
(13.5 ) ( 1.51 )
Screen size at 16:9
aspect ratio
W x D (cm)
37 81 x 46
46 102 x 57
55 122 x 69
64 142 x 80
74 163 x 91
83 183 x 103
91 203 x 114
101 224 x 126
110 244 x 137
119 264 x 149
128 284 x 160
138 305 x 171
147 325 x 183
156 345 x 194
162 358 x 201
165 366 x 206
167 370 x 208
174 386 x 217
184 406 x 229
193 427 x 240
202 447 x 251
211 467 x 263
220 488 x 274
233 508 x 286
239 528 x 297
248 549 x 309
257 569 x 320
266 589 x 331
276 610 x 343
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