Specification
Page 3 of 7
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As at January 2016
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Speciļ¬cations are subject to change without notice
Leica Camera AG
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Am Leitz-Park 5
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35578 WETZLAR
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GERMANY
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Telephone +49(0)6441-2080-0
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Fax +49(0)6441-2080-333
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www.leica-camera.com
LEICA SUMMICRON-M 28 mm f/2 ASPH.
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.
MTF DIAGRAMS
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Blende 2.0
Summicron-M 1:2,0/28mm ASPH. Brennweite 28 mm
0 3 6 9 12 15 18 21
Y' [mm]
0
20
40
60
80
100
[%]
Blende 2.8
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
2.0
2.8
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
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Blende 2.0
Summicron-M 1:2,0/28mm ASPH. Brennweite 28 mm
0 3 6 9 12 15 18 21
Y' [mm]
0
20
40
60
80
100
[%]
Blende 2.8
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
2.0
2.8
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
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Blende 2.0
Summicron-M 1:2,0/28mm ASPH. Brennweite 28 mm
0 3 6 9 12 15 18 21
Y' [mm]
0
20
40
60
80
100
[%]
Blende 2.8
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
2.0
2.8
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
Sagittal structures
Tangential structures
Aperture Stop 2
Aperture Stop 2.8
Aperture Stop 5.6