Leica 11141 Camera Lens User Manual


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LEICA SUPER ELMAR-M 21mm f/3.4 ASPH.
Distortion
Distortion is the deviation of the real image height (in
the picture) from the ideal image height. The relative
distortion is the percentage deviation. The ideal image
height results from the object height and the magnica-
tion. The image height of 21.6 mm is the radial distance
between the edge and the middle of the image eld for
the 24 mm x 36 mm format. The graph of the eective
distortion illustrates the appearance of straight horizon-
tal and vertical lines in the picture.
Vignetting is a continous decrease of the illumination to-
wards the edges of the image eld. The graph shows the
percentage lost of illumination over the image height.
100% means no vignetting.
Vignetting
4
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Blende2,0
Apo-Summicron-M1:2,0/50mmASPH.Brennweite50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
Relative Distortion
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Blende2,0
Apo-Summicron-M1:2,0/50mmASPH.Brennweite50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
Eective Distortion
0 3 6 9 12 15 18 21
Y'[mm]
0
20
40
60
80
100
[%]
Blende2,0
Apo-Summicron-M1:2,0/50mmASPH.Brennweite50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
LEICA APO-SUMMICRON-M 50 mm f/2 ASPH.
f/5.6
f/2.8
f/2.0
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