Carl Zeiss Touit 12 mm f/ 2.8 Lens Folleto
Performance data:
Vario-Sonnar
Vario-Sonnar
®
T* 4.5/45-90
Cat. No. 10 47 71
Modulation transfer T as a function of image height u.
Slit orientation:
sag
White light. Spatial frequencies R = 10, 20 and 40 cycles/mm
tan
f-number
k = 4.5
f = 70 mm
f-number
k = 8
f = 70 mm
T (%)
T (%)
u (mm)
u (mm)
0
20
40
60
80
100
0
5
10
15
20
25
30
35
0
20
40
60
80
100
0
5
10
15
20
25
30
35
Relative illuminance
f = 70 mm
E (%)
u (mm)
0
20
40
60
80
100
0
5
10
15
20
25
30
35
k = 4.5
k = 8
Distortion in % of image height u
f = 70 mm
V
u (mm)
-2,0
0,0
2,0
0
5
10
15
20
25
30
35