LEICA SUMMARIT-M 75 mm f/2.4
Technical Data.
Illustration 1:1
Lens Leica Summarit-M 75 mm f/2.4
Order number Black anodized: 11 682 Silver anodized: 11 683
Angle of view For 35 mm (24 x 36 mm): 32°/27°/18°; (diagonal, horizontal, vertical) for M8 (18 x 27 mm): 24°/20°/14°, equivalent focal length of approx. 100 mm
Optical design Number of elements/groups: 6/4 Position of entrance pupil in front of the bayonet: 25.26 mm Focusing range: 0,7 m to infinity
Distance setting Scala: combined meter/feet-increments Smallest object field: for 35 mm: 173 x 260 mm, for M8: 178 x 268 mm Largest reproduction ratio: 1:7.2
Aperture Setting/type: click stops, half steps Smallest aperture: f/16 Number of aperture blades: 11
Bayonet Leica M quick-change bayonet
Filter thread E46
Lens hood Screw-on
Dimensions and weight Length: approx. 60.5 mm (without lens hood) Diameter: approx. 55 mm/59 mm (without/with lens hood) Weight: approx. 325 g/350 g (without/with lens hood)
Page 1 of 8 I As at March 2016 I Specifications are subject to change without notice Leica Camera AG I 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 LEICA SUMMARIT-M 75 mm f/2.4
ENGINEERING DRAWING LENS SHAPE
Illustrations 1:1
The Leica Summarit-M 75 mm f/2.4 is a new „short telephoto“ lens that is significantly smaller and lighter than Summicron lenses with the same focal length, but still offers the image quality that is the hallmark of Leica M lenses. Combined with the 35 mm Summarit-M, it makes up an ideal shooting outfit with a useful lens speed that opens up fascinating composition options for Leica M photographers. The lens is a double Gauss lens incorporating six lenses in four groups. There are three lenses each placed on the front and the back the aperture, with the lens reducing the field curvature arranged closely to the image plane. Four lenses are made of special glass types with anomalous partial dispersion, two of which have a very high refractive power.
Page 2 of 8 I As at March 2016 I Specifications are subject to change without notice Leica Camera AG I 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 Summarit-M 1:2,4/75mm Brennweite 75 mm
Blende 2.4 Vignettierung [%] [%] 100 100
80 80 5.6 4.0 2.4 60 60
40 40
20 20
0 0 0 3 6 9 12 15 18 21 0 3 6 9 12 15 18 21 Y'[mm] Y'[mm]
Blende 4.0 Relative Verzeichnung [%] [%] 100 5 4 80 3 2 60 1 0 LEICA SUMMARIT-M 75 mm40 f/2.4 -1 -2 20 -3 -4 MTF DIAGRAMS 0 -5 0 3 6 9 12 15 18 21 0 3 6 9 12 15 18 21 Summarit-M 1:2,4/75mm Brennweite 75 mm Y' [mm] Y'[mm]
ApertureBlende Stop 2.4 2.4 VignettierungApertureBlende Stop 5.6 5.6 Effektive Verzeichnung [%] [%] [%] 100 100 100 Y'[mm]
80 80 80 5.6 4.0 12 2.4 60 60 60 9
40 40 40 6
20 20 20 3
0 0 0 0 0 3 6 9 12 15 18 21 0 3 06 39 612 915 1218 1521 18 21 0 3 6 9 12 15 18 Y'[mm] Y'[mm] Y'[mm] X'[mm]
ApertureBlende Stop 4.0 4.0 Relative Verzeichnung [%] [%] 100 5 4 80 3 2 60 1 0 40 -1 -2 20 -3 Sagittal structures -4 0 -5 Tangential structures 0 3 6 9 12 15 18 21 0 3 6 9 12 15 18 21 Y' [mm] Y'[mm]
Blende 5.6 Effektive Verzeichnung [%] 100 Y'[mm]
80 12
60 9
40 6
20 3
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). The0 contrast is plotted for 5, 10, 20, 40 lines/mm for the height of0 the format for tangential (dashed line) and sagittal structures (continuous0 line)3 for6 white light.9 The12 plots15 for 5 and18 10 lines/mm21 provide0 an impression3 6 of the9 contrast12 performance15 18 for coarser object structures and the 20 and 40 lines/mm plots documentY'[mm] the resolving power for fine and finest object structures. X'[mm]
Page 3 of 8 I As at March 2016 I Specifications are subject to change without notice Leica Camera AG I 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 Summarit-M 1:2,4/75mm Brennweite 75 mm
Blende 2.4 Vignettierung [%] [%] 100 100
80 80 5.6 4.0 2.4 60 60
40 40
20 20
0 0 0 3 6 9 12 15 18 21 0 3 6 9 12 15 18 21 Summarit-M 1:2,4/75mm Brennweite 75 mm Y'[mm] Y'[mm]
Blende 2.4 VignettierungBlende 4.0 Relative Verzeichnung [%] [%] [%] [%] 100 100100 5 4 80 80 80 5.6 3 4.0 2.4 2 60 60 60 1 0 40 40 40 -1 LEICA SUMMARIT-M 75 mm-2 f/2.4 20 20 20 -3 -4 0 0 0 -5 Distortion 0 3 6 9 12 15 18 21 0 0 3 3 6 6 9 9 12 1215 1518 1821 21 0 3 6 9 12 15 18 21 Y'[mm] Y'[mm]Y' [mm] Y'[mm]
Blende 4.0 RelativeRelative BlendeVerzeichnung Distortion 5.6 EffektiveEffective Verzeichnung Distortion [%] [%] [%] 100 5100 4 Y'[mm] 80 3 80 2 12 60 1 60 9 0 40 -1 40 6 -2 20 -3 20 3 -4 0 -5 0 0 0 3 6 9 12 15 18 21 0 0 3 3 6 6 9 9 12 1215 1518 1821 21 0 3 6 9 12 15 18 Y' [mm] Y'[mm]Y'[mm] X'[mm]
Blende 5.6 Effektive Verzeichnung [%] 100 Y'[mm] VIGNETTING 80 Summarit-M 1:2,4/75mm Brennweite 75 mm 12
60 Blende 2.4 Vignettierung [%] 9[%] 100 100 40 6 80 80 5.6 4.0 20 3 2.4 60 60 0 0 0 3 6 9 12 15 18 21 0 3 6 9 12 15 18 40 40 Y'[mm] X'[mm]
20 20 Sagittal structures
0 0 Tangential structures 0 3 6 9 12 15 18 21 0 3 6 9 12 15 18 21 Y'[mm] Y'[mm]
Blende 4.0 Relative Verzeichnung [%] [%] 100 5 4 80 3
Distortion Distortion2 is the deviation of the real image height (in the picture) from the ideal image height. The relative distortion is the percentage 60 deviation.1 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 0 appearance of straight horizontal and vertical lines in the picture. 40 -1 VIGNETTING Vignetting-2 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. 20 -3 -4 0 -5 0 3 6 9 12 15 18 21 0 3 6 9 12 15 18 21 Page 4 of 8 I As at March 2016 I Specifications are subject to change without notice Y' [mm] Leica Camera AG I Am Leitz-Park 5 I 35578 WETZLARY'[mm] I GERMANY I Telephone +49(0)6441-2080-0 I Fax +49(0)6441-2080-333 I www.leica-camera.com
Blende 5.6 Effektive Verzeichnung [%] 100 Y'[mm]
80 12
60 9
40 6
20 3
0 0 0 3 6 9 12 15 18 21 0 3 6 9 12 15 18 Y'[mm] X'[mm] LEICA SUMMARIT-M 75 mm f/2.4
Depth of field table
Aperture Stop Magnification 2.4 2.8 4.0 5.6 8.0 11.0 16.0 0.7 0.694 - 0.706 0.693 - 0.707 0.691 - 0.710 0.687 - 0.714 0.682 - 0.720 0.675 - 0.727 0.664 - 0.740 1/7.2 0.9 0.890 - 0.910 0.889 - 0.912 0.884 - 0.917 0.878 - 0.924 0.868 - 0.934 0.857 - 0.948 0.839 - 0.972 1/9.9 1 0.987 - 1.01 0.986 - 1.01 0.980 - 1.02 0.972 - 1.03 0.960 - 1.04 0.946 - 1.06 0.924 - 1.09 1/11.3 1.2 1.18 - 1.22 1.18 - 1.22 1.17 - 1.23 1.16 - 1.24 1.14 - 1.26 1.12 - 1.29 1.09 - 1.34 1/13.9 1.5 1.47 - 1.53 1.47 - 1.53 1.45 - 1.55 1.43 - 1.57 1.41 - 1.60 1.38 - 1.65 1.33 - 1.73 1/18 2 1.95 - 2.06 1.94 - 2.06 1.92 - 2.09 1.88 - 2.13 1.84 - 2.20 1.78 - 2.28 1.70 - 2.43 1/24.6 3 2.88 - 3.13 2.86 - 3.15 2.81 - 3.22 2.74 - 3.32 2.64 - 3.47 2.53 - 3.69 2.36 - 4.12 1/38 Distance Setting [m] Setting Distance 8 7.18 - 9.04 7.08 - 9.19 6.75 - 9.82 6.36 - 10.8 5.84 - 12.7 5.31 - 16.4 4.60 - 31.3 1/104.7 ∞ 69.0 - ∞ 60.9 - ∞ 42.7 - ∞ 30.5 - ∞ 21.4 - ∞ 15.5 - ∞ 10.7 - ∞ 1/∞
Aperture Stop 2,4
0,7
0,9
1
1,2
1,5
DistanceSetting [m] 2
3
8
∞
012345678910 Depth of Field [m]
Page 5 of 8 I As at March 2016 I Specifications are subject to change without notice Leica Camera AG I 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 LEICA SUMMARIT-M 75 mm f/2.4
Aperture Stop 2,8
0,7
0,9
1
1,2
1,5
2 DistanceSetting [m]
3
8
∞
012345678910 Depth of Field [m]
Aperture Stop 4,0
0,7
0,9
1
1,2
1,5
2 Distance Setting [m]Setting Distance
3
8
∞
012345678910 Depth of Field [m]
Page 6 of 8 I As at March 2016 I Specifications are subject to change without notice Leica Camera AG I 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 LEICA SUMMARIT-M 75 mm f/2.4
Aperture Stop 5,6
0,7
0,9
1
1,2
1,5
2 Distance Setting [m] Setting Distance
3
8
∞
012345678910 Depth of Field [m]
Aperture Stop 8,0
0,7
0,9
1
1,2
1,5
2 Distance SettingDistance [m]
3
8
∞
012345678910 Depth of Field [m]
Page 7 of 8 I As at March 2016 I Specifications are subject to change without notice Leica Camera AG I 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 LEICA SUMMARIT-M 75 mm f/2.4
Aperture Stop 11
0,7
0,9
1
1,2
1,5
2 Distance Setting Setting [m]Distance
3
8
∞
012345678 Depth of Field [m]
Aperture Stop 16
0,7
0,9
1
1,2
1,5
2 Distance Setting Setting [m]Distance
3
8
∞
0123456 Depth of Field [m]]
Page 8 of 8 I As at March 2016 I Specifications are subject to change without notice Leica Camera AG I 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