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As at July 2014
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Specifications 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-T 23 mm f/2 ASPH.
MTF DIAGRAMS
Focal length 23 mm
Infinity Close focus distance
MTF GRAPHS
Brennweite 23mm
unendlich Nahbereich
0 3 6 9 12
Y'[mm]
0
20
40
60
80
100
[%]
Blende 2.0
0 3 6 9 12
Y' [mm]
0
20
40
60
80
100
[%]
Blende 5.6
0 3 6 9 12
Y'[mm]
0
20
40
60
80
100
[%]
Blende 2.0
0 3 6 9 12
Y' [mm]
0
20
40
60
80
100
[%]
Blende 5.6
Sagittal structures
Tangential structures
Aperture stop 2.0
Aperture stop 5.6
Aperture stop 2.0
Aperture stop 5.6
The MTF is indicated both at full aperture and at f/5.6 for long distances
(infinity) and close focussing distance. Shown is the contrast in percentage
for 5, 10, 20 and 40 lp/mm across 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.