Leica 11626 Camera Lens User Manual


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LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
4
0 5 10 15 20
Y'[mm]
0
20
40
60
80
100
[%]
Aperture Stop 4.0
Aperture Stop 4.0
05101520
Y'[mm]
0
20
40
60
80
100
[%]
Aperture Stop 5.6
05101520
Y'[mm]
0
20
40
60
80
100
Aperture Stop 8.0
[%]
05101520
Y'[mm]
0
20
40
60
80
100
[%]
Vignetting
4.0
5.6
8.0
05101520
Y'[mm]
-5
-4
-3
-2
-1
0
1
2
3
4
5
[%]
Relative Distortion
0369121518
X'[mm]
0
3
6
9
12
Y'[mm]
Effective Distortion
05101520
Y'[mm]
0
20
40
60
80
100
[%]
Aperture Stop 4.0
05101520
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 8.0
Aperture Stop 8.0
[%]
05101520
Y'[mm]
0
20
40
60
80
100
[%]
Vignetting
4.0
5.6
8.0
05101520
Y'[mm]
-5
-4
-3
-2
-1
0
1
2
3
4
5
[%]
Relative Distortion
0369121518
X'[mm]
0
3
6
9
12
Y'[mm]
Effective Distortion
05101520
Y'[mm]
0
20
40
60
80
100
[%]
Aperture Stop 4.0
0 5 10 15 20
Y'[mm]
0
20
40
60
80
100
[%]
Aperture Stop 5.6
Aperture Stop 5.6
05101520
Y'[mm]
0
20
40
60
80
100
Aperture Stop 8.0
[%]
05101520
Y'[mm]
0
20
40
60
80
100
[%]
Vignetting
4.0
5.6
8.0
05101520
Y'[mm]
-5
-4
-3
-2
-1
0
1
2
3
4
5
[%]
Relative Distortion
0369121518
X'[mm]
0
3
6
9
12
Y'[mm]
Effective Distortion
MTF graphs 16 mm
The MTF is indicated at full aperture and at
f/5.6 and f/8.0 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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