Canon SX20 User Manual
85
APPENDIX
Relationship between Screen Size
and Projection Distance
and Projection Distance
Zoomed projection distance
Screen size at 4:3
aspect ratio
W x D (cm)
Max. Min.
H1 H2
Screen size at 16:9
aspect ratio
W x D (cm)
40s 81 x 61
2.0 m
(6.6c)
1.2 m
(3.9c)
55 cm
(1.8c)
6 cm
(0.2c)
37s 81 x 46
2.5 m
(8.2c)
1.5 m
(4.9c)
69 cm
(2.3c)
8 cm
(0.26c)
46s 102 x 57
60s 122 x 91
3.0 m
(9.8c)
1.8 m
(5.9c)
82 cm
(2.7c)
9 cm
(0.3c)
55s 122 x 69
3.5 m
(11.5c)
2.1 m
(6.9c)
96 cm
(3.1c)
11 cm
(0.36c)
64s 142 x 80
4.0 m
(13.1c)
2.4 m
(7.9c)
110 cm
(3.6c)
12 cm
(0.4c)
74s 163 x 91
4.5 m
(14.8c)
2.7 m
(8.9c)
123 cm
(4.0c)
14 cm
(0.46
c)
83s 183 x 103
5.0 m
(16.4c)
3.0 m
(9.8c)
137 cm
(4.5c)
15 cm
(0.49c)
91s 203 x 114
5.5 m
(18.0c)
3.3 m
(10.8c)
151 cm
(5.0c)
17 cm
(0.56c)
101s 224 x 126
6.0 m
(19.7c)
3.6 m
(11.8c)
165 cm
(5.4c)
18 cm
(0.59c)
110s 244 x 137
6.5 m
(21.3c)
3.9 m
(12.8c)
178 cm
(5.8c)
20 cm
(0.66c)
119s 264 x 149
7.0 m
(23.0c)
4.2 m
(13.8c)
192 cm
(6.3c)
21 cm
(0.69c)
128s 284 x 160
7.5 m
(24.6c)
4.5 m
(14.8c)
206 cm
(6.8c)
23 cm
(0.75c)
138s 305 x 171
8.0 m
(26.2c)
4.8 m
(15.7c)
219 cm
(7.2c)
24 cm
(0.79c)
147s 325 x 183
8.5 m
(27.9c)
5.1 m
(16.7c)
233 cm
(7.6c)
26 cm
(0.85c)
156s 345 x 194
8.8 m
(28.9c)
5.3 m
(17.4c)
241 cm
(7.9c)
27 cm
(0.86c)
162s 358 x 201
9.0 m
(29.5c)
5.4 m
(17.7c)
247 cm
(8.1c)
27 cm
(0.86c)
165s 366 x 206
9.1 m
(29.9c)
5.5 m
(18.0c)
250 cm
(8.2c)
28 cm
(0.9c)
167s 370 x 208
-
5.7 m
(18.7c)
261 cm
(8.6c)
29 cm
(0.95c)
174s 386 x 217
-
6.0 m
(19.7c)
274 cm
(9.0c)
30 cm
(0.98c)
184s 406 x 229
-
6.3 m
(20.7c)
288 cm
(9.4c)
32 cm
(1.05c)
193s 427 x 240
-
6.6 m
(21.7c)
302 cm
(9.9c)
34 cm
(1.12c)
202s 447 x 251
-
7.0 m
(23.0c)
315 cm
(10.3c)
35 cm
(1.15c)
211s 467 x 263
-
7.3 m
(24.0c)
329 cm
(10.8c)
37 cm
(1.21c)
220s 488 x 274
-
7.6 m
(24.9c)
343 cm
(11.3c)
38 cm
(1.25c)
233s 508 x 286
-
7.9 m
(25.9c)
357 cm
(11.7c)
40 cm
(1.31c)
239s 528 x 297
-
8.2 m
(26.9c)
370 cm
(12.1c)
41 cm
(1.35c)
248s 549 x 309
-
8.5 m
(27.9c)
384 cm
(12.6c)
43 cm
(1.41c)
257s 569 x 320
-
8.8 m
(28.9c)
398 cm
(13.1c)
44 cm
(1.44c)
266s 589 x 331
-
9.1 m
(29.9c)
411 cm
(13.5c)
46 cm
(1.51c)
276s 610 x 343
50s 102 x 76
70s 142 x 107
80s 163 x 122
90s 183 x 137
100s 203 x 152
110s 224 x 168
120s 244 x 183
130s 264 x 198
140s 284 x 213
150s 305 x 229
160s 325 x 244
170s 345 x 259
176s 358 x 268
180s 366 x 274
182s 370 x 277
190s 386 x 290
200s 406 x 305
210s 427 x 320
220s 447 x 335
230s 467 x 351
240s 488 x 366
250s 508 x 381
260s 528 x 396
270s 549 x 411
280s 569 x 427
290s 589 x 442
300s 610 x 457