lens:cookes4_i25mmt2.0
Table of Contents
Cooke S4/i 25mm T2.0
Summary
Cooke S4/i optics offer superb optical and mechanical performance, control of flare, distortion, veiling glare and spherical aberrations at full aperture, with the cam-type focus mechanism allowing for smooth focus adjustments.
Tech Specs
| Manufacturer | Cooke |
| Series | S4/i |
| Model | - |
| Focal Length | 25mm |
| Max Aperture | T2.0 |
| Min Aperture | T22 |
| Format | Super 35 |
| Image Circle | 30mm |
| Minimum Focus | 9 in. |
| Focus Rotation | 300 |
| Iris Blades | 8 |
| Optical Design | 10/9 |
| Squeeze | none |
| Front Diameter | 110mm |
| Filter Thread | none |
| Focus/Zoom Rod | none |
| Native Mount | PL |
| Data Protocol | Cooke/i |
| Length | 4.5 in. |
| Weight | 1588 g |
| Body Telescope | none |
| Body Material | Aluminum |
| Focus Drive | Manual |
| Iris Drive | Manual |
| Zoom Drive | n/a |
History
Country of Origin: UK
Release Date:
Launch Price:
Design Revisions:
Service
Notes
Media
lens/cookes4_i25mmt2.0 [.txt] · Last modified: 2025-12-18 / 06:53:12 am PST by JR