Mobotix D12 Technické informace stáhnout pdf (Strana 41)

2.9 Lens Options

MOBOTIX offers five different lenses from Super Wide

Angle (L22) to Tel e (L135). Since the M22M is backlight-

proof, these lenses do not require an auto iris. Without

the iris as a mechanical component, these glass

lenses are extremely robust and maintenance-free.

The standard lens for the M22M Secure and IT models

is the Super Wide Angle lens with a horizontal field of

vision of approx. 90°. Although the Super Wide Angle

is a super wide-angle lens, it shows very little distor-

tion and delivers good image quality, even when using

the 4x zoom of the M22M. If a camera with a Super

Wide Angle lens has been mounted in the corner of a

room, the complete room is visible on the image.

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M22M Camera Manual Part 1

L22 Super Wid e Angle lens

Note

MOBOTIX lens designations do not reflect the actual focal length of the

lenses, but the focal length (Lxxmm) converted to 35mm camera for-

mat. For example, the MOBOTIX Super Wide Angle lens has an actual

focal length of 4mm. This would be the equivalent of 22mm on a

35mm camera and thus results in the MOBOTIX designation “L22” for

the Super Wide Angle lens.

Since the image sensors in the cameras have different sizes, convert-

ing to 35mm camera as a known format provides for better compari-

son of the image format and the field of vision parameters of different

lenses. Another benefit is that you can easily set a 35mm SLR camera

to the same focal length (Lxx) to obtain the same field of vision. This

approach greatly facilitates lens selection.

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Mobotix D12 Technické informace Strana 41