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592
CINEMATOGRAPHIC ANNUAL
Picture Sizes Obtained with Projection Lenses
Distance in Feet Fro.-n Screen
Focal Length of Lens
8
10
12
16 I 20 | 25 | 32 | 36 j 40 | 45 | 50 | 64 I 75
100
in Inches
Si:e of Picture (Feet and Decimals) (First figure shows width, second figure shows height)
H
410
3.04
5.13 3.80
ā
1
3.08 2.28
3.85 2.85
4.62 3.42
6.16 4.56
7-70 5.70
9.63 713
ā Zā
...
IM
2.05 1.52
2.57 1.90
3.08 2.28
4.11 3.04
5.13 3.80
6.42 4.75
8.21 6.03
9.24
6.84
2
1.54 1.14
193 1.43
2.31 171
3:0s
2.28
3.85 2.85
4.81 3.56
6.16 456
6.93 5.13
7.70 5.70
4.6$
6.41
.9.63 7.13
2H
1.23 .91
1.54 1.14
1.85 1.37
2.46
1.83
3.03 2.23
3.35
2.85
4.93 3.65
5.54 4.10
6.16 4.56
6l,93 5.13
770 5.70
986
7.30
,:.:-':;
3
1.23 .95
1.10 .81
154 1.14
2.05 1.52
2.57 1.90
3.21
2.38
4.11
3.04
3.52 2.60
3.00 2.23
4.62 3.42
3.96 2.93
3.47 2.57
5.13
3.S6
4.40 3.26
\5.77
423
6.42 4 75
8.21 6.03
7.04 5.21
9.63 7.13
8.25 6.11
5.35
3>i
1.32. .98
1.76 1.30
2.20 1.63
275
2.04
4.95 3.66
4.35 3 21
5.50 4.07,
11.00
8.14
4
1.16 .86
1.34 1.14
1.94 1.43
2.41
1.73
3.S5 2.S5
357
4.56
713
Table of Hyperfocal Distances
"pOLLOWINp will be found a table of. hyper"*ā focal distances, showing the distance at which critical sharpness is obtained for each diaphragm opening when the lens is focused at infinity. All objects at the distances shown and beyond will be in focus. You will notice that the telephoto lens
is not scaled clear up to the infinity mark. For subjects between the highest footage mark on lens focusing scale and the hyperfocal distance for diaphragm stop being used, your estimate of proper setting between highest footage on lens and infinity mark will give sharp focusing.
Fool Length
Fl.8
F2.7
F3.3
F3.5
F4
F4.5
F5.5
F6.3
F8
Fll
F16
F22
F32
25 m/m
22'
15'
12'
1UV
10'
9'
7'
6'
5'
4'
W
35 m/m
44'
29*
24'
22 W
20'
17 H'
14H'
12 Vt
lO7
7'
5'
3'
139'
114'
107'
94'
83'
68''
fft
47'
34'
23'
17'
12'
Telephoto 3h"
178'
167'
146'
130'
107'
93'
73'
53'
36'
26'
18'
Telephoto 4"
19C
167'
148'
121'
106'
83'
. 61'
42'
30*
21'
Telephoto 6*
375'
333'
273'
23S'
188'
13'6'r
'94'
68'
47'