© MOBOTIX AG • Security-Vision-Systems • Made in Germany
40/96
D12 Camera Manual Part 1
Focal lengths of MOBO-
TIX lenses are always
given as compared to
a 35mm camera!
To determine the lens you
need, simply use a camera
with zoom lens to find a
matching MOBOTIX lens
Note
The focal lengths of MOBOTIX lenses do not reflect the actual focal
length of the lenses, but the focal length (
Lxx
mm) converted to 35mm
camera format. For example, the MOBOTIX Super Wide-Angle lens has
an actual focal length of 4mm. This would be the equivalent of 22mm
on a 35mm camera and thus leads to the designation
L22
for the
lens.
Since the image sensors in digital cameras have different sizes,
converting to 35mm camera format provides for better comparing the
image format and field of vision parameters of different lenses.
Another benefit is that you can easily set a 35mm camera (analog or
digital) to the same focal length (
Lxx
) to obtain the same field of vision.
This approach greatly facilitates lens selection.
Lens Table
Order name
Original image
L22 L32 L43 L65 L135
Equiv. 35 mm camera
Focal length
F-Number
Image angle horizontally
22 mm
4 mm
32 mm
6 mm
2,0
90°
2,0
60°
43 mm
8 mm
65 mm
12 mm
2,0
45°
2,0
31°
135 mm
25 mm
2,5
15°
Image angle vertically
Installed at 1 m
• Image width
• Image height
67°
m
45°
m
2,0
1,3
1,1
0,8
Installed at 5 m
• Image width
• Image height
Installed at 10 m
m
10,0
m
5,7
6,6
m
4,1
m
34°
m
23°
m
0,8
0,6
0,5
0,4
11°
m
0,3
0,2
m
4,1
m
2,7
3,0
m
2,0
m
m
1,3
1,0
m
• Image width
• Image height
Installed at 20 m
• Image width
20,0
13,3
11,5
8,2
m
40,0
m
23,0
• Image height
Installed at 50 m
• Image width
• Image height
26,6
m
16,4
m
100,0
66,0
57,5
41,0
8,2
6,1
5,5
4,0
m
16,4
m
11,0
2,6
1,9
m
5,2
12,2
m
8,0
m
41,0
30,5
27,5
20,0
3,8
m
13,0
9,5
Comments to this Manuals