Leica 11649 Camera Lens User Manual


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LEICA SUPER-ELMAR-M 18 mm f/3.8 ASPH.
3
0 5 10 15 20
Y' [mm] = 21.0
0
20
40
60
80
100
[%]
Aperture Stop 3.8
05101520
0
20
40
60
80
100
05101520
0
20
40
60
80
100
05101520
0
20
40
60
80
100
05101520
-5
-4
-3
-2
-1
0
1
2
3
4
5
0369121518
0
3
6
9
12
05101520
0
20
40
60
80
100
05101520
0
20
40
60
80
100
0 5 10 15 20
Y' [mm] = 21.0
0
20
40
60
80
100
Aperture Stop 8.0
[%]
05101520
0
20
40
60
80
100
05101520
-5
-4
-3
-2
-1
0
1
2
3
4
5
0369121518
0
3
6
9
12
05101520
0
20
40
60
80
100
0 5 10 15 20
Y' [mm] = 21.0
0
20
40
60
80
100
[%]
Aperture Stop 5.6
05101520
0
20
40
60
80
100
05101520
0
20
40
60
80
100
05101520
-5
-4
-3
-2
-1
0
1
2
3
4
5
0369121518
0
3
6
9
12
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.
tangential structures
sagittal structures
_ _ _ _ _ _ _ _
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