129
Appendix
Relationship between Screen Size and Projecting Distance
16:10
diagonal
Screen Size
Projecting distance
16:10
16:9
4:3
Max.
zooming
Min.
zooming
Width
Height
Width
Height
Width
Height
cm
m (feet)
40"
86
54
86
48
72
54
1.2 (3.9')
1.8 (5.9')
50"
108 67 108 61 90 67
1.5
(4.9')
2.2
(7.2')
60"
129
81
129
73
108
81
1.8 (5.9')
2.6 (8.5')
70"
151 94 151 85 126 94
2.1
(6.9') 3.1
(10.2')
80"
172
108
172
97
144
108
2.4 (7.9') 3.5 (11.5')
90"
194 121 194 109 162 121
2.7
(8.9') 4.0
(13.1')
100"
215
135
215
121
179
135
3.0 (9.8') 4.4 (14.4')
110"
237 148 237 133 197 148
3.3
(10.8') 4.9
(16.1')
120"
258
162
258
145
215
162
3.6 (11.8') 5.3 (17.4')
130"
280 175 280 158 233 175
3.9
(12.8') 5.8
(19.0')
140"
302
188
302
170
251
188
4.2 (13.8') 6.2 (20.3')
150"
323 202 323 182 269 202
4.5
(14.8') 6.7
(22.0')
160"
345
215
345
194
287
215
4.8 (15.8') 7.1 (23.3')
170"
366 229 366 206 305 229
5.1
(16.7') 7.5
(24.6')
180"
388
242
388
218
323
242
5.4 (17.7') 8.0 (26.3')
190"
409 256 409 230 341 256
5.8
(19.0') 8.4
(27.6')
200"
431
269
431
242
359
269
6.1 (20.0') 8.9 (29.2')
210"
452 283 452 254 377 283
6.4
(21.0')
–
220"
474
296
474
267
395
296
6.7 (22.0')
–
230"
495 310 495 279 413 310
7.0
(23.0')
–
240"
517
323
517
291
431
323
7.3 (24.0')
–
250"
538 337 538 303 449 337
7.6
(25.0')
–
260"
560
350
560
315
467
350
7.9 (26.0')
–
270"
582 363 582 327 485 363
8.2
(27.0')
–
280"
603
377
603
339
503
377
8.5 (28.0')
–
290"
625 390 625 351 521 390
8.8
(28.9')
–
300"
646
404
646
363
538
404
9.1 (29.9')
–
Width
He
ight
Heigh
t
Width
4:3
Screen size
16:9/16:10
Screen size
(diagonal)
