Overview
Overview
The Cooke S4/i 50mm Prime T2.0 offers superb optical and mechanical performance, control of flare, distortion, veiling glare and spherical aberrations at full aperture. The cam-type focus mechanism allows for smooth focus adjustments. Modular construction increases ease of maintenance and serviceability.
S4/i lenses are designed for all PL mounted professional motion picture film and electronic cameras. The /i Technology provides cinematographers and camera operators with vital information on lens setting, focusing distance, aperture and depth-of-field, hyperfocal distance, serial number, owner data, lens type and focal length in both metric and footage measurements.
Features:
- Maximum Format Cover: 30mm diameter (Super 35mm format)
- Focus Scales: two opposing focus scales (metric or feet); scales marked from infinity to MOD
- Focus Drive Gear: 140 teeth 0.8 metric module x 6.0mm wide x 98mm from image plane
- Iris Scales: two opposing linear T-scales, whole and 1/3 stops marked
- Iris Drive Gear: 134 teeth 0.8 metric module x 4.0mm wide x 79.5mm from image plane
- Internal Front Fitting Filter: internal thread for filter adapter M105 x 0.75 pitch (12mm and 14mm not applicable)
- Electronics accessible via contacts in PL mount that sync with /i compatible cameras
- All S4/i prime lenses are color balanced, color-matched and compatible with Cooke 5/i, miniS4/i and Anamorphic/i
- All S4/i primes have a true T2 aperture and cover Super 35mm format (apart from the T2.8 300mm)
- Every index mark is labelled; more detailed markings allow for more detailed focus control
- Academy Award® winning cam-style focus movement coupled with a large lens barrel diameter, allowing for an increased number of focus markings, particularly at close focus
- Spherical aberration has been controlled throughout the range of focal lengths to eliminate compensation of changes in back focus with aperture
- A four-point contact bearing provides a smooth positive backlash-free movement
- Features Cooke Hardened PL Mount with /i Technology contacts
- Large, clear numerals on both sides of the focus barrel benefit the focus puller when shooting under difficult lighting conditions; the the Entrance Pupil position is engraved on the lens
- All Cooke S4/i Primes have a common fixed front diameter of 110mm (except for 12mm, 150mm, 180mm, 300mm), with a focus drive gear of 140T x 0.8 mod and an iris drive gear of 114T x 0.8
- A scratch resistant PTFE hard anodised finish is provided on all Cooke lenses, providing a durable, hard-wearing surface to meet the most demanding environmental conditions
- An eight-leaf linear module iris assembly is fitted into S4/i primes with an aperture range of T2 to T22 (Except 300mm)
- S4/i lenses are designed for all shooting applications, including handheld and Steadicam, providing comfortable balance ratio with the latest compact cameras
What's in the Box
- Rear Cap
- Front Cap
- Cooke S4/i 50mm Prime T2.0
Specifications
Specifications
Key Highlights
- 50mm T2 Pime
- 110mm OD
- MOD: 20" (550mm)
- PL Mount
Lens Characteristics
Prime or Zoom:
Prime
Lens Mount:
PL
Blade Count:
8
Fixed Focal Length:
50mm
Front Diameter:
110mm
Image Circle:
38mm
Rotation Angle of Focusing Ring:
93degrees
Aperture Range:
T2 to T22
Minimum Focus Distance:
20"
Max Angle of View:
34degrees
