LENS SPECIFICATIONS and TECHNICAL DATA

 
Units
18mm
25mm
32mm
50mm
75mm
100mm
T-stop Range

 
T2-T22

T2-T22
T2-T22
T2-T22
T2-T22
T2-T22
Minimum Object
Distance
m
(inches)
inf-.250
inf-9
inf-.250
inf-9
inf-.300
inf-12
inf-.500
inf-20
inf-.750
inf-30
inf-.900
inf-36
Max Diagonal
Angle of View
(Super 35mm Format)
degrees
80
62
50
34
22
17
Overall Length
(front of lens to
image plane)
mm
(inches)
165
(6.5)
165
(6.5)
180
(7.0)
177
(7.0)
177
(7.0)
193
(7.5)
Max Front Diameter
mm
110
110
110
110
110
110
Total Weight
Kg
(lbs)
1.75
3.85
1.6
3.5
1.85
4.0
1.5
3.3
1.75
3.85
2.0
4.4
Close Focus from
Lens Front
inches
cm
2.5
5
2.5
5
6
15
13
33
23
58
28.5
72
Angular Rotation to Marked Close Focus
degrees
200
200
300
300
300
300

Maximum Format Cover
30mm diameter (Super 35mm Format)
Focus Scales
Two opposing focus scales - metric or footage
 
Focus Drive Gear

140 teeth 0.8 metric module x 6.0mm wide (98mm from image plane)
 
Iris Scales
Two opposing linear T-scales - whole and third stops marked
 
Angular Rotation
Total rotation 91 degrees
 
Iris Drive Gear
114 teeth 0.8 metric module x 6.0mm wide (84mm from image plane)
 
Internal Front
Fitting Filter
Internal thread for filter adaptor M105 x 75 pitch

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For more information go to the Cooke web site at...

www.cookeoptics.com