OKINA USA - Lens Angle Comparison

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CCTV Lens Angle Comparison

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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

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'

13.2'

10'

19.8'

15'

33'

25'

66'

50'

132'

100'

5.0

4.7'

3.5'

9.4'

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'

5.5'

14'

11'

28'

22'

25.0

0.7'

1.4'

2.1'

3.5'

10'

20'

14'

50.0

0.4'

0.3'

0.8'

0.6'

1.2'

0.9'

1.5'

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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