10_ELMAR_M_engl Elmar M 50 Mm Technical Data En
User Manual: Manual
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LEICA ELMAR-M 50 mm f/2.8 1
This extremely compact lens collapses into the camera body and carries on the tradition of the legendary Elmar lenses on earlier
Leica cameras. This design was updated optically and mechanically to a modern standard without compromises. The use of high-
refraction optical glass and an intelligent new optical computation led to outstanding overall performance. A classic medium-speed
lens with minimal dimensions and a low weight make this a highly versatile lens for many applications.
Lens shape
LEICA ELMAR-M 50 mm f/2.8 2
Engineering drawing
Technical Data
Angle of view (diagonal, horizontal, vertical)
Optical design
Distance setting
Diaphragm
Bayonet
Filter (type)
Lens hood
Dimensions and weight
47°, 40°, 27°
Number of elements / groups: 4 / 3
Focal length: 51.7 mm
Entrance pupil: 17.1 mm (related to the first lens surface in light direction)
Focusing range: 0.7 m to Infinity
Scale: combined meter/feet-increments
Smallest object field: 274 mm x 411 mm
Highest reproduction ratio: 1:11.4
Setting / Type: with clickstops (including half values from f/2.8 - f/8), manual diaphragm
Smallest aperture: f/16
Leica M quick-change bayonet
internal thread for screw-in type filters E 39
built-in, telescopic
Length: extended (working position): 37.6 mm, collapsed (storage position): 21.6 mm
Largest diameter: 52 mm
Weight: approx. 170 g / 245 g (black anodized- / silver chrome finish)
LEICA ELMAR-M 50 mm f/2.8 3
0 5 10 15 20
Y' [mm]
0
20
40
60
80
100
[%] Aperture Stop 2.8
0 5 10 15 20
Y' [mm]
0
20
40
60
80
100
[%] Aperture Stop 8.0
0 5 10 15 20
Y' [mm]
0
20
40
60
80
100
[%] Aperture Stop 5.6
MTF graphs
The MTF is indicated both at full aperture and at
f/5.6 at long taking distances (infinity). Shown
is the contrast in percentage for 5, 10, 20 and
40 lp/mm accross the height of the 35 mm film
format, for tangential (dotted line) and sagittal
(solid line) structures, in white light. The 5 and
10 lp/mm will give an indication regarding the
contrast ratio for large object structures.The
20 and 40 lp/mm records the resolution of finer
and finest object structures.
tangential structures
sagittal structures
_ _ _ _ _ _ _ _
LEICA ELMAR-M 50 mm f/2.8 4
Distortion
Vignetting
0 5 10 15 20
Y' [mm]
-5
-4
-3
-2
-1
0
1
2
3
4
5
[%]
Relative Distortion
0 5 10 15 20
Y' [mm]
0
20
40
60
80
100
[%]
2.8
5.6
8.0
0 3 6 9 12 15 18
X' [mm]
0
3
6
9
12
Y' [mm]
Effective Distortion
Distortion is the deviation of the real image height
(in the picture) from the ideal image height. The
relative distortion is the percentage deviation.
The ideal image height results from the object
height and the magnification. The image height of
21.6mm is the radial distance between the edge and
the middle of the image field for the format 24mm x
36mm. The graph of the effective distortion illustra-
tes the appearance of straight horizontal and verti-
cal lines in the picture.
Vignetting is a continous decrease of the illumina-
tion to the edges of the image field. The graph
shows the percentage lost of illumination over the
image height. 100% means no vignetting.
tangential structures
sagittal structures
_ _ _ _ _ _ _ _
LEICA ELMAR-M 50 mm f/2.8 5
Depth of field table
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LEICA ELMAR-M 50 mm f/2.8 6
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LEICA ELMAR-M 50 mm f/2.8 7
Leica Camera AG / Oskar-Barnack-Straße 11 / D-35606 Solms / Telefon + 49 (0) 6442-208-0 / Telefax + 49 (0) 6442-208-333
www.leica-camera.com / info@leica-camera.com
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