The CCTV
security camera lens chart and field-of-view
diagrams are designed to assist you in
selecting the right lens size for your
application. Please contact us if you require
additional information or assistance. Keep in
mind all of the security cameras we sell come
equipped with lenses that will achieve 95% of
your surveillance applications.
|
CCTV Visual Lens Comparison Chart |
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
|
|
|
|
CCTV Technical
Lens Comparison Chart |
|
Indicates total viewable area (WxH) at a
given distance based on focal length
used
|
|
Focal
Length |
5' (WxH) |
10' (WxH) |
20' (WxH) |
40' (WxH) |
50' (WxH) |
100' (WxH) |
|
2.5 mm |
9.4x7.1 |
19x14 |
38x28 |
75x57 |
94x71 |
188x142 |
|
2.9 mm |
8.6x6.4 |
17x13 |
34x26 |
69x51 |
86x64 |
171x129 |
|
3.6 mm |
6.9x5.1 |
14x10 |
27x21 |
55x41 |
69x51 |
137x103 |
|
4.0 mm |
6.0x4.5 |
12x9 |
24x18 |
48x36 |
60x45 |
120x90 |
|
4.3 mm |
5.7x4.3 |
11x8.6 |
23x17 |
46x34 |
57x43 |
114x86 |
|
5.5 mm |
4.5x3.4 |
9x6.8 |
18x14 |
36x27 |
45x34 |
90x68 |
|
6.0 mm |
2.0x1.5 |
4x3 |
8x6 |
16x12 |
20x15 |
40x30 |
|
8.0 mm |
1.5x1.1 |
3x2.3 |
6x4.5 |
12x9 |
15x11 |
30x22 |
|
12.0 mm |
1.0x0.7 |
2x1.4 |
3.8x3 |
7.7x6 |
9.6x7 |
19x14 |
Use your 35mm
camera and this chart to help make your lens
decision.
|
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.
