| Cooke S4/i 15-40mm T2 CXX Zoom |
| Focal
length range |
15-40mm |
| T
stop range |
T2 - T22 |
| Maximum
f Stop |
f/1.84 |
| Close
focus from lens front |
6.94 inches /
169mm |
| Length
from front of lens to image plane |
11.06 inches
/ 281mm |
| Minimum
marked object distance |
18 inches / 450mm |
| Maximum
format covered |
30mm image circle
(for Super 35 format) |
| Diagonal
angle of view for 30mm image circle |
90 - 41 degrees |
| Iris
scales |
Two opposing
scales, whole and third stops marked |
| Angular
rotation of iris |
92 degrees |
| Iris
drive gear |
134 teeth 0.8
metric module
x
2.5mm wide x 80.5mm from image plane |
| Focus
scales |
Two opposing
focus scales, metric or footage marked from infinity
to MOD |
| Angular
rotation from infinity to MOD endstop |
290 degrees |
| Angular
rotation between endstops |
300
degrees |
| Focus
drive gear |
153 teeth 0.8
metric module
x
6.0mm wide x 223mm from image plane |
| Zoom
scales |
Two opposing
zoom scales |
| Angular
rotation of zoom scale |
130 degrees |
| Zoom
drive gear |
140 teeth 0.8
metric module
x
6.0mm wide x 99mm from image plane |
| Length
from front of lens to lens mount |
9 inches / 229mm |
| Front
diameter |
136mm |
| Weight |
7.9 lbs. / 3.6
Kg |