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LEICA SUMMARIT-M 90 mm f/2.4
Technical Data.
Illustration 1:1
Lens Leica Summarit-M 90 mm f/2.4
Order number Black anodized: 11 684
Angle of view
(diagonal, horizontal, vertical)
Optical design Number of elements/groups: 5/4
Distance setting Scala: combined meter/feet-increments
Aperture Setting/type: click stops, half steps
Bayonet Leica M quick-change bayonet
Filter thread E46
Lens hood Screw-on
Dimensions and weight Length: approx. 67 mm (without lens hood)
Silver anodized: 11 685
For 35 mm (24 x 36 mm): 27°/23°/15°;
for M8 (18 x 27 mm): 20°/17°/11°, equivalent focal length of approx. 120 mm
Position of entrance pupil in front of the bayonet: 8.22 mm
Focusing range: 0.9 m to infinity
Smallest object field: for 35 mm: 187 x 280 mm, for M8: 140 x 210 mm
Largest reproduction ratio: 1:7.8
Smallest aperture: f/16
Number of aperture blades: 11
Diameter: approx. 55 mm/59 mm (without/with lens hood)
Weight: approx. 346 g/371 g (without/with lens hood)
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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LEICA SUMMARIT-M 90 mm f/2.4
ENGINEERING DRAWING LENS SHAPE
Illustrations 1:1
The Leica Summarit-M 90 mm f/2.4 is a versatile telephoto lens that rounds off the new lens speed class of
Summarit-M lenses. Despite being much more handy and lighter than the comparable 90 mm Summicron lens, it
offers outstanding optical and mechanical quality.
With its combination of long focal length and wide maximum aperture, it embodies the tradition of classical
spherical design and adds state-of-the-art technology and superb per formance. Its compact construction keeps
viewfinder obstruction to a bare minimum, while the choice of glass types employed guarantees outstanding
colour fidelity.
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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MTF DIAGRAMS
Summarit-M 1:2,5/90mm Brennweite 90 mm
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Vignettierung
2.4
4.0
5.6
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 21
Y'[mm]
0
20
40
60
80
100
[%]
Blende 2.4
Summarit-M 1:2,5/90mm Brennweite 90 mm
0 3 6 9 12 15 18 21
Y' [mm]
0
20
40
60
80
100
[%]
Blende 4.0
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Vignettierung
2.4
4.0
5.6
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
X'[mm]
0
3
6
9
12
Y'[mm]
Effektive Verzeichnung
LEICA SUMMARIT-M 90 mm f/2.4
[%]
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
Aperture Stop 2.4
Blende 2.4
Aperture Stop 4.0
Blende 4.0
Y'[mm]
Y' [mm]
Aperture Stop 5.6
[%]
Blende 5.6
100
80
60
40
20
0
0 3 6 9 12 15 18 21
Sagittal structures
Tangential structures
Y'[mm]
MTF GRAPHS The MTF is shown in each case for the maximum aperture and the aperture value 4.0 and 5.6 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
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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DISTORTION
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Vignettierung
2.4
4.0
5.6
[%]
Vignettierung
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Vignettierung
2.4
4.0
5.6
0 3 6 9 12 15 18 21
Y'[mm]
-5
-4
-3
-2
-1
0
1
2
3
4
5
[%]
Relative Verzeichnung
LEICA SUMMARIT-M 90 mm f/2.4
[%]
5
4
3
2
1
0
-1
-2
-3
-4
-5
0 3 6 9 12 15 18 21
VIGNETTING
100
80
60
40
20
0
0 3 6 9 12 15 18 21
Relative Distortion
Relative Verzeichnung
Y'[mm]
Y'[mm]
5.6
4.0
2.4
Effective Distortion
Effektive Verzeichnung
Y'[mm]
12
9
6
3
0
0 3 6 9 12 15 18
Sagittal structures
Tangential structures
X'[mm]
DISTORTION
VIGNETTING
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 21.6 mm is the radial distance
between the edge and the middle of the image field for the format 24 mm x 36 mm. The graph of the effective distortion illustrates the
appearance of straight horizontal and vertical lines in the picture.
Vignetting is a continous decrease of the illumination to the edges of the image field. The graph shows the percentage loss of illumination
over the image height. 100 % means no vignetting.
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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LEICA SUMMARIT-M 90 mm f/2.4
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DEPTH OF FIELD TABLE
Aperture Stop
2.4 2.8 4.0 16.0
0.9 0.893 - 0.908 0.892 - 0.908 0.889 - 0.912 0.884 - 0.917 0.878 - 0.924 0.869 - 0.933 0.856 - 0.949 1/7.8
1 0.991 - 1.01 0.990 - 1.01 0.986 - 1.01 0.980 - 1.02 0.972 - 1.03 0.962 - 1.04 0.946 - 1.06 1/8.9
1.2 1.19 - 1.21 1.19 - 1.22 1.18 - 1.22 1.17 - 1.23 1.16 - 1.24 1.14 - 1.26 1.12 - 1.29 1/11.1
1.5 1.48 - 1.52 1.48 - 1.52 1.47 - 1.53 1.45 - 1.55 1.44 - 1.57 1.41 - 1.60 1.38 - 1.65 1/14.4
2 1.96 - 2.04 1.96 - 2.04 1.94 - 2.06 1.92 - 2.09 1.89 - 2.13 1.85 - 2.18 1.78 - 2.28 1/20
3 2.91 - 3.09 2.91 - 3.10 2.87 - 3.15 2.82 - 3.21 2.74 - 3.31 2.66 - 3.44 2.53 - 3.69 1/31
5 4.76 - 5.26 4.74 - 5.29 4.64 - 5.43 4.51 - 5.62 4.32 - 5.93 4.11 - 6.38 3.81 - 7.29 1/53
Distance Setting [m]
10 9.09 - 11.1 9.00 - 11.2 8.64 - 11.9 8.19 - 12.85 7.60 - 14.6 6.97 - 17.7 6.13 - 27.3 1/107.9
∞ 98.8 - ∞ 89.8 - ∞ 62.8 - ∞ 44.9 - ∞ 31.4 - ∞ 22.9 - ∞ 15.7 - ∞ 1/∞
5.6 8.0 11.0
Magnification
Aperture Stop 2,4
0,9
1
1,2
1,5
2
3
Distance Setting [m]
5
10
∞
Depth of Field [m]
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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0123456789101112
LEICA SUMMARIT-M 90 mm f/2.4
0123456789101112
Aperture Stop 2,8
0,9
1
1,2
1,5
2
3
Distance Setting [m]
5
10
∞
Depth of Field [m]
Aperture Stop 4,0
0,9
1
1,2
1,5
2
3
Distance Setting [m]
5
10
∞
Depth of Field [m]
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
I
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LEICA SUMMARIT-M 90 mm f/2.4
0 1 2 3 4 5 6 7 8 9 10111213141516
01234567891011121314
Aperture Stop 5,6
0,9
1
1,2
1,5
2
3
Distance Setting [m]
5
10
∞
Depth of Field [m]
Aperture Stop 8,0
0,9
1
1,2
1,5
2
3
Distance Setting [m]
5
10
∞
Depth of Field [m]
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
I
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LEICA SUMMARIT-M 90 mm f/2.4
012345678910111213141516
012345678910111213141516
Aperture Stop 11
0,9
1
1,2
1,5
2
3
Distance Setting [m]
5
10
∞
Depth of Field [m]
Aperture Stop 16
0,9
1
1,2
1,5
2
3
Distance Setting [m]
5
10
∞
Depth of Field [m]
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
I
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