LENS NAME
Distagon T 2.8/15

FOCAL LENGTH
15

MIN FOCAL DISTANCE
0.25

APERTURE RANGE
2.8 22

RELATIVE ILLUMINANCE
3
F-NUMBER 2.8
7
 0 100
 3  90
 5  82
10  60
15  40
20  22
22  20
F-NUMBER 5.6
8
 0 100
 3  99
 5  95
10  85
15  72
17  70
20  55
22  50
F-NUMBER 8
8
 0 100
 3  99
 5  95
10  85
15  72
17  70
20  60
22  58

RELATIVE DISTORTION
9
 0    0
 3 -0.1
 5 -0.2
10 -0.7
13 -1.0
15 -1.2
17 -1.5
20 -1.8
22 -1.9

FIELD CURVATURE
6
 0 0
 5 0
10 0
15 0
20 0
22 0

ASTIGMATISM
SAGITTAL
6
 0 0
 5 0
10 0
15 0
20 0
22 0
TANGENTIAL
6
 0 0
 5 0
10 0
15 0
20 0
22 0

SPHERICAL ABERRATION
0