Technical Data
25
Signature Prime
47/T1.8
58/T1.8
75/T1.8
95/T1.8
Optical Parameters
Focal length
47 mm
58 mm
75 mm
95 mm
MOD
from sensor plane
(minimum marked
distance)
0.45 m / 18"
0.45 m / 18"
0.65 m / 26"
0.85 m / 2'9"
MOD from lens
front
0.13 m / 5.1"
0.23 m / 9.0"
0.43 m / 16.9"
0.63 m / 2'1"
Magnification ratio
at MOD
1:6.3
1:5.4
1:7.2
1:7.9
Entrance pupil po-
sition (related to im-
age plan, in direc-
tion to object plane)
155.8
mm / 6.13"
143.9
mm / 5.66"
115.5
mm / 4.55"
85.4 mm / 3.36"
Angle of view H-V-D
for LF Open Gate
42.6° /
30.4° / 50.8°
34.9° /
24.8° / 41.8°
27.5° /19.3° /
33.3°
21.6° /
15.3° / 26.5°
Physical Dimensions
Front diameter
114 mm / 4.49"
114 mm / 4.49"
114 mm / 4.49"
114 mm / 4.49"
Max. housing diam-
eter
115 mm / 4.53"
115 mm / 4.53"
115 mm / 4.53"
115 mm / 4.53"
Length from flange
178 mm / 7.01”
178 mm / 7.01”
178 mm / 7.01”
178 mm / 7.01”
Weight (lens only)
1.8 kg / 4.0lb
2.0 kg / 4.4lb
1.9 kg / 4.2lb
1.9 kg / 4.2lb
Lens barrel
Magnesium
Magnesium
Magnesium
Magnesium
Interfaces
Lens mount
LPL
LPL
LPL
LPL
Lens data system
LDS-2
LDS-2
LDS-2
LDS-2
Flange focal dis-
tance
44 mm
44 mm
44 mm
44 mm