Mobotix M15 Specifications Page 25

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Technical Specifications
© MOBOTIX AG • Security-Vision-Systems • Made in Germany
www.mobotix.com • [email protected]
Lenses for Sensor Modules with 6MP Image Sensor
Focal Lengths of MOBOTIX Lenses
Focal lengths of MOBOTIX lenses are always given as compared to a 35mm camera.
For example, the MOBOTIX Super Wide-Angle lens L20-L23 has a nominal focal
length of 3.6mm. Converted to 35mm camera, this would be a lens with 20mm
or 23mm focal length, depending on whether it is combined with a 6MP or a 5MP
image sensor. Converting the focal lengths to 35mm camera as a known format
provides for better comparing the image formats and the angles of view of the dif
-
ferent lenses. Another benefit is that you can easily set a 35mm camera (analog or
digital) to the same focal length (Lxx) of the MOBOTIX lens to obtain the same angle
of view. This approach greatly facilitates lens selection.
Lenses 6MP
Sensors
L10 L20 L22 L32 L43 L65 L135 L270
Original image
(image format
4:3)
Focal length
(35mm equiv.)
10mm 20mm 22mm 32mm 43mm 65mm 135mm 270mm
Nominal focal
length
1.8mm 3.6mm 4mm 6mm 8mm 12mm 25mm 50mm
Aperture 2.0 1.8 1.8 1.8 1.8 1.8 1.8 2.5
Horiz. angle of
view
180° 105° 90° 60° 45° 31° 15°
Vert. angle of
view
180° 77° 67° 45° 34° 23° 11°
At 1m distance
Image width 2.6 2.0 1.2 0.8 0.6 0.3 0.1
Image height 1.6 1.3 0.8 0.6 0.4 0.2 0.1
At 5m distance
Image width 13.0 10.0 5.8 4.1 2.8 1.3 0.7
Image height 8.0 6.6 4.1 3.1 2.0 1.0 0.5
At 10m distance
Image width 26.1 20.0 11.5 8.3 5.5 2.6 1.3
Image height 15.9 13.2 8.3 6.1 4.1 1.9 1.0
At 20m distance
Image width 52.1 40.0 23.1 16.6 11.1 5.3 2.6
Image height 31.8 26.5 16.6 12.2 8.1 3.9 1.9
At 50m distance
Image width 130.3 100.0 57.7 41.4 27.7 13.2 6.6
Image height 79.5 66.2 41.4 30.6 20.3 9.6 4.8
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