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Lens Angle Comparison
Go to Lens Page
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
Lens
Focal
Length
(mm)
Viewable Angle (Degrees)
Horiz. Vert.
5 feet away Horiz. Vert.
(ft) (ft)
10 feet away Horiz. Vert.
(ft) (ft)
15 feet away Horiz. Vert.
(ft) (ft)
25 feet away Horiz. Vert.
(ft) (ft)
50 feet away Horiz. Vert.
(ft) (ft)
100 feet away Horiz. Vert.
(ft) (ft)
3.6
74° 55°
7.5 5.2
15.1 10.4
22.6 15.6
37.7 26.1
75.4 52.1
151 104
6.0
42° 32°
3.8 2.9
7.7 5.7
11.5 8.6
19.2 14.4
38.4 28.7
77 57
8.0
32° 24°
2.9 2.1
5.7 4.3
8.6 6.4
14.4 10.7
28.7 21.3
57 43
12.0
22° 17°
1.9 1.5
3.9 3.0
5.8 4.5
9.7 7.5
19.4 14.9
39 30
16.0
15° 11°
1.3 1.0
2.6 1.9
3.9 2.9
6.6 4.8
13.2 9.6
26 19
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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