ECL-120MI: 12mm Fixed Focus Lens with Manual Iris

This 12mm fixed focus lens fits CS-mount cameras. It has an increased focal length when compared to standard lenses and brings the subject much closer to the viewer. Manual iris.

CS-Mount, C-Mount Cameras & Lenses

C- and CS-mount lenses are standard equipment on many traditional CCTV cameras. The two type of lenses differ in how they are mounted. The distance from the surface where the lens comes in contact with the camera to the focal point (the "flange back") of a CS-mount lens is 12.5mm (0.492"). This is 5mm shorter than a C-mount lens. Most professional cameras are CS-mount cameras and include a C-ring, so they can us a C-mount lens OR a CS-mount lens. You can't use a C-mount camera with a CS-mount lens - the lens won't fit.

  • 12mm optical glass
  • Manual iris
  • Fits CS-style lens mount.

Please contact us for a specification sheet that covers this lens product.

 

fixed focus cctv camera lens
  • cctv camera lens
Lens Focal
Length
Distance between camera and monitored zone
5-feet
10-feet
15-feet
25-feet
50-feet
100-feet
Millimeters
Horz area
Vert area
Horz area
Vert area
Horz area
Vert area
Horz area
Vert area
Horz area
Vert area
Horz area
Vert area
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'
2.97
12.3'
9.6'
24.6'
19.2'
36.9'
28.8'
61.5'
48'
123'
96'
246'
192'
3.60
7.5'
5.7'
15'
11.4'
22.5'
17.1'
37.5'
28.5'
75'
57'
150'
114'
3.70
7.3'
5.5'
14.6'
11'
21.9'
16.5'
36.5'
27.5'
73'
55'
146'
110'
4.0
6.6'
5'
13.2'
10'
19.8'
15'
33'
25'
66'
50'
132'
100'
4.30
6.1'
4.6'
12.2'
9.2'
18.3'
13.8'
30.5'
23'
61'
46'
122'
92'
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'
 
 


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