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Video Surveillance Security Camera Systems FAQ
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Cameras and Cable Questions

Do you have a 35mm to CCTV Focal Length Conversion Chart?

35 mm
1/4"
1/3"
1/2"
2/3"
1"
Angle
10
0.9
1.4
1.8
2.5
3.7
120.6
35
3.2
4.8
6.4
8.8
12.8
53.2
60
5.5
8.2
11.0
15.1
22
32.6
85
7.7
11.6
15.6
21.3
31.1
23.3
110
10.0
15.1
20.1
27.6
40.3
18.1
135
12.3
18.5
24.7
33.9
49.4
14.8
160
14.6
21.9
29.3
40.2
58.6
12.5
185
16.8
25.3
33.9
46.4
67.7
10.8
210
19.1
28.8
38.4
52.7
76.9
9.5
235
21.4
32.2
43.0
59.0
86.0
8.5
260
23.7
35.6
47.6
65.3
95.2
7.7

CCTV focal length numbers shown converted from a 35mm camera zoom lens.

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