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Twenty
The INTERNATIONAL PHOTOGRAPHER
August, 1935
55
mm.
LENS
ENGLISH MEASURE
2.165 Inches
Distance Focussed
F 2.5
h
F3.5 ||
F4.5
F 6.3
F9
F 12.5
F 18
F25
F36
3 3.3
II
1 II
2-ll| 3-7
2-9
4-1
2-7 | 4-7
2-3 I
5-3 i
1-11
7-6
1-111 15-1
1-7 | 00
4-11.
II
1
II
1 II
3-ll| 6-2
3-11
6-1011
3-3 | 8-6
II
2-ll|
12-1 |
2-7 |
35-9
2-3 | 00
II
1-111 00
6 6.7
II
II
1 II
5-3 | 9-2
II
4-7
11-1
4-3 | 15-5
II
3-7 |
33-9 |
2-111
00
2-7 I 00
1-111 00
9-10.
II
II
1 II
6-10| 17-4
II
6-2
25-3
5-3 | 80-1
II
4-7 |
00 i
1 3-7 |
00
2-111 00
2-3 | 00
13 1.4
il
II
1 II
8-1 | 31-9
li
7-2
70-2
II
5-10| 00
II
4-111
00 I
3-ll|
00
2-ll| 00
2-3 | 00
16 4.8
II
II
1 II
9-6 f 62-0
H
8-2
00
II
6-6 | 00
5-3 |
00 |
4-3 |
00
3-3 | 00
II
2-3 | 00
19 8.1
II
II
1 II
10-5 1171-3
II
8-10
00
II
7-2 | 00
5-6 |
00
4-3
00
3-3 | 00
II
2-3 | 00
22-11.5
II
II
1 II
11-1 | 00
II
9-6
00
II
7-6 | 00
5-101
00
i 4-7 |
00
3-3 | 00
II
2-3 | 00
32 9.6
II
II
1 II
13-1 | 00
II
10-9
00
II
8-2 | 00
6-2 |
00 |
1 4-7 |
00
3-7 | 00
II
2-3 | 00
49 2.4
li
II
1 II
15-1 | 00
li
12-5
00
II
8-10| 00
6-10|
00
1 4-ll|
00
3-7 | 00
II
2-7 I 00
98 5.
II
II
1 II
17-8 | 00
II
13-9
00
9-10| 00
II
7-2 |
00 1
I 5-3 |
00
3-ll| 00
2-11| 00
II
||
1 II
19 4 00
14-9
00
10-9 I 00
7-101
00
5-3
00
3-1 1| 00
3-3 | 00
65 mm. LENS
2.559 Inches
Distance Focussed
F 2.5
F3.5 ||
F 4.5
F6.3
F9
F 12.5
F 18
F25
F36
3 3.3
l!
1 II
2-ll| 3-7
2-11
3-9
il
2-9 | 4-1
2-7 |
4-7
2-3
5-6
II
1-11| 7-2
II
1-11| 16-0
4-11.
II
II
1 II
4-3 | 5-8
3-11
6-2
II
3-7 | 7-2
II
3-7 |
8-6 |
2-ll|
12-5
2-7 | 32-1
2-3 | 00
6 6.7
II
II
1 II
5-6 | 8-1
5-3
9-2
II
4-7 |11-1
II
4-3 |
15-5 I
3-7
37-8
II
2-ll| 00
il
2-7 | 00
9-10.
II
II
1 II
7-6 | 14-5
II
6-10
17-4
II
5-10| 26-2
II
5-3 |
75-5 |
4-3 |
00
II
3-7 | 00
II
2-ll| 00
13 1.4
II
II
1 II
9-2 | 22-7
8-1
31-5
II
7-2 | 82-4
II
5-101
00 |
4-11
00
3-1 1 1 00
II
2-ll| 00
16 4.8
II
II
1 II
10-9 i 34-9
9-6
60-8
II
7-101 00
6-6 |
00 |
5-3 |
00
II
4-3 | 00
il
3-3 | 00
19 8.1
II
II
1 II
12-1 | 53-5
10-5
160-1
8-10| 00
II
7-2 |
00 |
5-6 |
00
II
4-3 | 00
li
3-3 | 00
22-11.5
II
II
1 II
13-1 | 88-6
II
11-1
00
II
9-2 | 00
II
7-6 |
00
5-10|
00
II
4-7 | 00
II
3-3 | 00
32 9.6
II
II
1 II
15-9 | 00
II
13-1
00
I!
10-5 I 00
II
8-2 |
00 1
6-2 |
00
4-7 | 00
II
3-7 | 00
49 2.4
II
1
II
1 II
19-0 | 00
II
15-1
00
II
11-5 I 00
II
9-2 |
00 |
6-10|
00
il
4-ll| 00
3-7 | 00
98 5.
il
1
II
1 il
23-3 ! 00
II
18-4
00
13-5 | 00
II
9-10|
00 |
1 7-2 |
00
il
5-3 | 00
II
3-7 | 00
164 .4
II
II
26-2 | 00
II
20-0
00
14-1 | 00
10-101 0
i 7-10
00
5-3 I 00
3-7 1 00
75 mm. LENS
2.952 Inches
Distance Focussed
II
F2.5
F3.5 ||
F4.5
F6.3
F9
F 12.5
F 18
F25
F36
3 3.3
1!
1 II
3-1 | 3-7
2-11
3-7
2-9 | 3-9
2-9
4-1 1
2-5
4-7
2-3 | 5-6
1-111 7-10
4-11.
II
1 II
4-5 | 5-6
II
4-3
5-10||
3-ll| 6-2
II
3-7 |
7-2 |
3-3
9-2
2-11| 13-5
II
2-7 | 54-1
6 6.7
II
1 II
5-6 | 7-10||
5-3
8-6
II
4-11 9-6
II
4-7 |
11-51
3-11
17-0
II
3-7 | 45-3
II
2-1 1 1 00
9-10.
1!
1 II
7-10| 12-9
II
7-6
14-9
6-6 | 18-4
II
5-10
28-2 |
1 5-3
150-3
II
4-3 | 00
1!
3-3 | 00
13 1.4
II
1 II
9-10| 19-0
II
9-2
23-3
II
8-2 | 35-5
II
6-10|100-8
I 5-10
00
II
4-ll| 00
II
3-7 | 00
16 4.8
II
1 II
11-9| 26-10||
10-5
36-8
II
9-2 | 76-5
II
7-101
00
| 6-6 |
00
5-3 | 00
II
3-111 00
19 8.1
II
1 II
13-5 | 37-4
11-9
58-4
II
10-2 |413-4
II
8-6 |
00 |
6-101
00
il
5-3 | 00
II
3-ll| 00
22-11.5
II
1 II
14-9 | 51-2
II
12-9
102-0
'1
10-9 | 00
II
9-2 |
00 |
1 7-2 |
00
II
5-6 | 00
II
4-3 | 00
32 9.6
II
1 II
18-4 |154-2 ||
15-5
00
il
12-9 | 00
1!
10-2 |
00
| 7-10
00
II
6-2 | 00
II
4-7 | 00
49 2.4
II
II
22-3 | 00
II
18-4
00
II
14-5 | 00
11-5 |
00 |
1 8-6 |
00
6-6 | 00
H
4-7 | 00
98 5.
II
1 II
29-2 | 00
II
22-7
00
II
17-0 | 00
II
12-9 |
00 |
8-10|
00
7-2 | 00
li
4-ll| 00
164-4
II
32-9 00
25-11
00
18-8 1 00
13-5 I
00
9-2
00
7-10| 00
4-1 1J 00
METRIC
90 mm. LENS
.1 mm. Circle of Confusion
PAUL R. HARMER
Meters || F 1.5
II
F2.5
F 3.5
F4.5
F6.3
F9.
F 12.5
F 18
II
F25
F36
1.
II
II
II
II 0.95
1.05
110.95
1 1-1
II
0.9
1 1.1
II
0.9
115
0.85
1.25
II
0.8
1 1-4
II
0.7
1.7
1.5
II
II
II
1 II 1.4
1 1.65
li 1.35
1 1.7
II
1.3
I 1.8
II
1.2
1.9
II
1.1
2.2
II
1.0
1 2.7
II
0.9
4.0
2.
II
II
II
II 1.8
1 2.25
II 1.75
2.35
II
1.7
1 2.5
II
1.5
1 2.8
II
1.4
1 3.5
II
1.3
I 4.9
II
1.1
13.1
3.
II
II
II
1 II 2.6
1 3.6
II 2.4
1 3.9
II
2.3
I 4.4
II
2.1
1 5.4
II
1.8
1 8.5
II
1.6
129.1
II
1.3
00
4.
II
II
II
II 3.3
5.1
II 3.1
1 5.7
II
2.8
1 7.1
II
2.5
110.1
II
2.1
130.7
II
1.8
| 00
II
1.5
00
5.
II
II
II
1 II 3.9
1 6.9
II 3.6
I 8.0
II
3.2
11.0
II
2.8
120.6
II
2.4
| 00
II
2.0
| 00
II
1.6
00
6.
II
II
II
II 4.5
I 8.9
II 4.1
111.0
II
3.6
117.5
II
3.1
166.0
II
2.6
| 00
II
2.1
1 00
II
1.7
00
7.
II
II
II
II 5.1
11.4
II 4.6
115.0
II
4.0
29.6
II
3.4
I 00
II
2.8
I 00
II
2.2
I 00
II
1.7
00
10.
II
II
II
II 6.5
122.2
II 5.7
42.3
II
4.8
I 00
II
3.9
| 00
II
3.1
[ 00
II 2.5
I 00
II
1.8
00
15.
II
II
II
II 8.2
186.5
1 7.0
| 00
II
5.6
1 00
II
4.5
I 00
II
3.5
| 00
II
2.7
I 00
II
2.0
00
30.
II
II
II
1111.3
| 00
II 9.1
I 00
II
6.9
00
II
5.3
| 00
II
3.9
I 00
II
2.9
I 00
II
2.1
00
50.
II
II
II
1113.2
00
H10.3
00
II
7.5
00
5.7
1 00
II
4.0
00
II
3.0
00
II
2.1
00
110 mm.
LENS
2
II
.1
II
II 1-85
2.15
II 1.8
1 2.2
II
1.75
235
1.7
1 2.5
II
1.6
2.8
1.4
1 3.3
II
1.3
4.5
3
II
II
II
II 2.7
1 3.4
II 2.6
1 3.5
II
2.5
1 3.8
II
2.3
i 4.3
II
2.1
5.2
II
1.9
1 7.4
II
1.6
18.8
4
II
II
II
II 3.5
1 4.7
1! 3.3
1 5.0
II
3.1
1 5.6
II
2.9
I 6.6
II
2.5
| 9.4
II
2.2
119.3
II
1.9
00
5
II
II
II
II 4.2
1 6.1
II 4.0
1 6.7
II
3.7
1 7.8
II
3.3
110.0
II
2.9
117.8
II 2.5
I 00
II
2.1
00
6
II
II
II
II 4.9
1 7.7
H 4.6
8.6
II
4.2
110.6
II
3.7
115.1
II
3.2
|46.0
II
2.7
| 00
II
2.2
00
7
II
II
II
II 5.6
I 9.4
H 5.2
110.8
II
4.6
14,2
II
4.1
123.7
II
3.5
I 00
II
2.9
I 00
II
2.3
00
10
II
II
II
II 7.3
115.7
II 6.6
120.3
II
5.8
136.3
II
5.0
I 00
II
4.0
1 00
II 3.3
| 00
II
2.6
00
15
II
1 II
II
1 II 9.7
128.8
II 8.7
54.5
II
7.1
I 00
II
5.9
| 00
II
4.7
1 00
II 3.6
I 00
II
2.8
00
30
II
II
II
1114.3
I 00
1111.8
1 00
II
9.3
1 00
II
7.5
I 00
II
5.5
00
II
4.2
I 00
II
3.0
00
50
li
II
II
||
1
II
1
l|
I
||
II
II
1
II
130
mm. LENS
2
II
II
II
|| 1.9
2 1
II 1.85
2.15
il
1.8
2 2
1.75
1 2.3
II
1.7
1 2.5
II
1.6
2.8
II
1.4
3.3
3
II
II
II
II 2.8
1 3.3
II 2.7
1 3.4
II
2.6
1 3.5
II
2.5
1 3.8
II
2.3
1 4.3
II
2.1
1 5.2
II
1.9
7.7
4
II
II
II
1 II 3.6
1 4.5
3.5
| 4.7
II
3.3
5.1
II
3.1
1 5.6
II
2.8
1 6.9
II
2.5
1 9.5
II
2.2 1
24.0
5
II
II
II
II 4.4
1 5.8
II 4.2
1 6.1
II
4 0
1 6.7
II
3.7
1 7.8
II
3.3
110.4
II
2.9
117.8
II
2.5 1
00
6
II
II
II
1 II 5.2
1 7.1
II 4.9
1 7.7
II
4.6
1 8.7
II
4.2
110.6
II
3.7
116.0
II
3.2
43.5
II
2.7
00
7
II
II
II
1 II 5.9
I 8.6
li 5.6
9.4
II
5.1
111.1
II
4.6
114.3
II
4.0
126.4
II
3.5
| 00
II
2.8
00
10
II
II
II
II 7.9
113.6
7 3
115.9
1!
6.6
121.0
II
5.8
137.0
II
4.9
I 00
II
4.1
I 00
II
3.2
00
15
II
II
II
1110.7
125.0
II 9.7
33.3
II
8.4
170.6
II
7.1
I 00
II
5 8
| 00
II
4.7
| 00
II
3.6
00
30
II
II
II
1116.7
1150.
1114.2
I 00
1111.6
1 00
II
9.3
I 00
II
7.1
00
II
5.6
| 00
II
4.2
00
50
II
II
II
1 II
1
II
1
II
1
II
II
1
II
1
II
75
II
II
1 II
II
1
II
1
II
1
1!
il
1
II
II
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