LEICA APO-SUMMICRON-R 90 mm f/2 ASPH.
3
0
5
10
15
20
Y'[mm]
0
20
40
60
80
100
[%]
Aperture Stop 2.0
0
5
10
15
20
Y'[mm]
0
20
40
60
80
100
Aperture Stop 5.6
[%]
0
5
10
15
20
Y'[mm]
0
20
40
60
80
100
[%]
Aperture Stop 2.8
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.
tangential structures
sagittal structures
_ _ _ _ _ _ _ _
MTF graphs
