Leica NOCTILUX-M 1:0,95/50 mm ASPH. Notice D'utilisation page 18

Lens mount
Filter mount
Lens hood
Viewfinder
Finish
Dimensions and weight
Length to bayonet flange
Largest diameter
Weight
compatible cameras
The nominal focal lengths of the Leica M lenses are based on the 35 mm-format, i.e. on a film
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format of 24 x 36 mm. In comparison, with its 18 x 27 mm, the sensor in the Leica M 8 models
is somewhat smaller though – by a factor of 0.75. Therefore, when used on the Leica M 8 models,
these lenses have angles of view corresponding to lenses with focal lengths that are longer by
a factor of 1.33 (1.33 = reciprocal of 0.75). This has the respective effects on their perspective,
but not on their depth of field, which, with the Leica M 8 models, can also be read directly off
the lens (see "Depth of field scale", p. 16).
The 6 bit lens identification bar code (7) situated on the bayonet flange enables the digital
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Leica M models to identify the attached type of lens. This information is utilized by the camera
to optimize exposure and image data.
This is valid regardless of the format of the respective camera – be it 18 x 27 mm (sensor size)
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as in the Leica M 8 models or 24 x 36 mm as in all other Leica M models.
Leica M quick-change bayonet with 6 bit lens
identification bar code for digital Leica M models
Female thread for screw-on filters size E 60, non rotating
Built-in, telescopic, lockable
Camera viewfinder
Black anodized
approx. 75 mm
approx. 73 mm
approx. 630 g
All Leica M cameras
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