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CCTV Lens Angle Comparison
 
Approximate 'Horizontal Angle of view' - based on Camera Format / Focal Length of the Lens:
Lens Focal Length
1/3" CCD
1/4" CCD
2.6mm
99 degrees
75 degrees
3.6mm
78 degrees
60 degrees
3.8mm
70 degrees
55 degrees
6.0mm
43 degrees
33 degrees
8.0mm
35 degrees
26 degrees
12.0mm
23 degrees
17 degrees
Varifocal example:
3.8 - 8.0mm
78 - 35 degrees
55 - 26 degrees
 
Field of View for 1/3" Security Camera Lenses
Lens Focal
Length
Distance Between Camera and Object
5ft / 1.52m
10ft / 3.03m
15ft / 4.55m
25ft / 7.58m
50ft / 15.15m
100ft / 30.0m
mm
Horiz.
Vert.
Horiz.
Vert.
Horiz.
Vert.
Horiz.
Vert.
Horiz.
Vert.
Horiz.
Vert.
2.45
17.3'
13'
34.6'
26'
51.9'
39'
86.5'
65'
173'
130'
346'
260'
2.80
14'
10.5'
28'
21'
42'
31.5'
70'
52.5'
140'
105'
280'
210'
3.60
7.5'
5.7'
15'
11.4'
22.5'
17.1'
37.5'
28.5'
75'
57'
150'
114'
4.0
6.6'
5'
13.2'
10'
19.8'
15'
33'
25'
66'
50'
132'
100'
5.0
4.7'
3.5'
9.4'
7'
14.1'
10.5'
23.5'
17.5'
47'
35'
94'
70'
6.0
3.8'
2.9'
7.6'
5.8'
11.4'
8.7'
19'
14.5'
38'
29'
76'
58'
8.0
2.9'
2.2'
5.8'
4.4'
8.7'
6.6'
14.5'
11'
29'
22'
58'
44'
12.0
1.9'
1.5'
3.8'
2.8'
5.7'
4.5'
9.5'
7.5'
19'
15'
38'
28'
16.0
1.4'
1.1'
2.8'
2.2'
4.2'
3.3'
7'
5.5'
14'
11'
28'
22'
25.0
1'
0.7'
2'
1.4'
3'
2.1'
5'
3.5'
10'
7'
20'
14'
50.0
0.4'
0.3'
0.8'
0.6'
1.2'
0.9'
2'
1.5'
4'
3'
8'
6'
 
The following chart displays the comparison of CCTV lens with the regular 135mm film camera lens.
CCTV lens
135mm Lens
 
 
Focal Length
Angle
Angle
Focal Length
 
 
2.5mm 120° 114° 14mm
3.6mm 92° 94° 20mm
4.3mm 78° 75° 28mm
6.0mm 53° 51°

45mm

Standard lens for 135mm
camera Regular angle of
our eyes vision

12mm 25° 24° 100mm
25mm 18° 18° 135mm

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