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CINEMATOGRAPHIC ANNUAL
PICTURE SIZES OBTAINED WITH PROJECTION LENSES
Distance m Feet From Screen
Focal Length of Lens
8
1 10 |
12
16 | 20 | 25 | 32 | 36 j 40 | 45 | 50
64
75
100
in Inches
Size op Picture (Fect and Decimals) (First figure shows width, second figure shows height)
H
4.10 3.04
5.13 3.80
„
9.63 7.13
-'-
—
—
—
9.63 7.13
— ■
1
3.08 2.28
3.85 2.85
4.62 3.42
6.16 4.56
7.70 5.70
1^
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
924
6.84
2
1.54 1.14
193 1.43
2.31 171
3:03
2.28
3.85 2.85
4.81 3.56
6.16 4.56
6.93 5.13
7.70 5.70
4.66
6.41
2H
1.23 .91
1.54 1.14
1.85 1.37
2.46 1.83
3.03 2.23
3.S5 2.85
3.21 2.38
4.93 3.65
4.11
3.04
5.54
4.10
4.62 3.42
6 16
4.56
5.13
3. SO
6.93 5 13
5.77 428
770 570
986
7.30
8.21 6.03
9.63 713
:::.:::
3
1.23 .95
1.54 1.14
2.05 1.52
2.57 1.90
6.42 475
3>i
1.10
.81
1.32. .98
1.76 1.30
1.34 1.14
2.20 1.63
2.75
2.04
2.41 1.73
3.52 2.60
3. (VI 2.2S
3.96 2.93
3.47
2.57
4.40 3.26
3.85 2.85
4 95 3.66
4.35 3.21
5.50
407
'4.82 357
7.04 5.21
8.25 6.11
7.22
5 55
11.00 8.14
4
1.16 .86
1.94 1.43
6.16 4.56
9.61 713
TABLE OF HYPERFOCAL DISTANCES
"pOLLOWING will be found a table of. hyperfocal 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 hypcrfocal distance for diaphragm stop being used, your estimate of proper setting between highest footage on lens and infinity mark will give sharp focusing.
F<v..l Length
Fl.8
F2.7
F3.3
F3.5
F4
F4.5
F5.5
F6.3
F8
Fll
Fl6
F22
F32
25 m/m
22'
15'
12'
11'//
10'
9'
r
6'
5'
4'
2V2'
44'
29*
24'
22 W
2tV
17 W
IVA'
12!/2'
10'
7'
5'
3'
139'
114'
107'
94'
83'
68'
6cy
47'
34'
23'
17'
12'
Telephoto 3 M'
178'
167'
146'
130'
107'
93'
73'
53'
36'
26'
18'
Telephoto 4"
1^
167'
148'
121'
106'
83'
. 61'
42'
3C
21'
Telephoto 6"
375'
333'
273'
23S'
18S'
136'
'94'
68'
47'