Leica Elmarit-M 28mm 2.8 ASPH User Manual
LEICA ELMARIT-M 28 mm f/2.8 ASPH.
Technical Data.
Illustrations 1:1
Lens Leica Elmarit-M 28 mm f/2.8 ASPH.
Order number 11 677
Angle view
(diagonal, horizontal, vertical)
Optical design Number of elements/groups: 8/6
Distance setting Scala: combined meter-/feet-increments
Diaphragm Setting/type: preset, with click-stops, half values available
Bayonet Leica M quick-change bayonet
Filter thread E39
Lens hood Available, screwable (supplied)
Dimensions and weight Length: approx. 30,7/49,4 mm (without/with lens hood)
For 35 mm (24 x 36 mm): 75°/65°/46°;
for M8 (18 x 27 mm): 60°/51°/36°, corresponds to a focal length of approx. 37 mm with 35 mm-format
Entrance pupil for bayonet: 11,8 mm
Focusing range: 0,7 m to infinity
Smallest object field: for 35 mm: 533 x 800 mm, for M8: 400 x 600 mm
Highest reproduction ratio: 1:22,2
Smallest aperture: f/22
Number of aperture blades: 10
Largest diameter without lens hood: approx. 52 mm
Weight: approx. 175 g/211 g (without/with lens hood and covers)
Leica Camera AG
Am Leitz-Park 5 I 35578 WETZLAR I GERMANY I Telephone +49(0)6441-2080-0 I Fax +49(0)6441-2080-333 I www.leica-camera.com
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Page 1 of 7 I As at January 2016 I Specifications are subject to change without notice
LEICA ELMARIT-M 28 mm f/2.8 ASPH.
ENGINEERING DRAWING LENS SHAPE
Aspherical lens
This new high-speed lens is the most compact of Leica M lenses. By using an aspherical element it was possible
to attain top imaging performance with a weight of only 175 grams. This lens is practically distortion-free in the
whole focus range from 0.7 m to infinity and only extends slightly into the viewfinder field of M cameras.
Leica Camera AG
Am Leitz-Park 5 I 35578 WETZLAR I GERMANY I Telephone +49(0)6441-2080-0 I Fax +49(0)6441-2080-333 I www.leica-camera.com
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Page 2 of 7 I As at January 2016 I Specifications are subject to change without notice
MTF DIAGRAMS
Elmarit-M 1:2,8/28mm ASPH. Brennweite 28 mm
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Vignettierung
2.8
5.6
8.0
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Blende 2.8
Elmarit-M 1:2,8/28mm ASPH. Brennweite 28 mm
0 3 6 9 12 15 18 21
Y' [mm]
0
20
40
60
80
100
[%]
Blende 5.6
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Vignettierung
2.8
5.6
8.0
0 3 6 9 12 15 18 21
Y'[mm]
-5
-4
-3
-2
-1
0
1
2
3
4
5
[%]
Relative Verzeichnung
0 3 6 9 12 15 18
0
3
6
9
12
Y'[mm]
Effektive Verzeichnung
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Blende 2.8
Elmarit-M 1:2,8/28mm ASPH. Brennweite 28 mm
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Vignettierung
2.8
5.6
8.0
0 3 6 9 12 15 18 21
Y'[mm]
-5
-4
-3
-2
-1
0
1
2
3
4
5
[%]
Relative Verzeichnung
LEICA ELMARIT-M 28 mm f/2.8 ASPH.
[%]
100
80
60
40
20
0
0 3 6 9 12 15 18 21
[%]
100
80
60
40
20
0
0 3 6 9 12 15 18 21
MTF GRAPHS The MTF is shown in each case for the maximum aperture and the aperture values 5.6 and 8.0 for long focusing distances (infinity).
The contrast is plotted for 5, 10, 20, 40 lines/mm for the height of the format for tangential (dashed line) and sagittal structures
(continuous line) for white light. The plots for 5 and 10 lines/mm provide an impression of the contrast performance for coarser object
structures and the 20 and 40 lines/mm plots document the resolving power for fine and finest object structures.
Leica Camera AG
Aperture Stop 2.8
Blende 2.8
[%]
Aperture Stop 8.0
Blende 8.0
100
80
60
40
20
0
0 3 6 9 12 15 18 21
Y'[mm]
Aperture Stop 5.6
Blende 5.6
Sagittal structures
Tangential structures
Y' [mm]
Am Leitz-Park 5 I 35578 WETZLAR I GERMANY I Telephone +49(0)6441-2080-0 I Fax +49(0)6441-2080-333 I www.leica-camera.com
I
Page 3 of 7 I As at January 2016 I Specifications are subject to change without notice
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