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Cooke 18mm T2.0 S4/i Prime - PL Mount

Cooke Optics
Abel Code: ZGC-CS4-18
Mfr. Code: CS4-18
Estimated to Ship – 5-10 Business Days
Special Order Only
This is a special order item. You will be charged upon placing your order, which is non-cancelable and non-returnable.
This Cooke S4/i 18mm Prime lens has a maximum aperture of T2.0, features Cooke /i lens data technology, and MOD at 9" (25cm).
Key Highlights
  • 18mm T2.0 Prime Lens
  • 110mm front OD
  • MOD: 9" (25cm)
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The Cooke 18mm T2.0 S4/i Prime - PL Mount lens 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.


  • 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 18mm T2.0 S4/i Prime - PL Mount


Key Highlights

  • 18mm T2.0 Prime Lens
  • 110mm front OD
  • MOD: 9" (25cm)
  • PL Mount

Lens Characteristics

Prime or Zoom:
Lens Mount:
Focus Scale:
Blade Count:
Filter Thread Size:
Fixed Focal Length:
Front Diameter:
Image Circle:
32mm - Super 35mm format
Max Dimensions (Diameter x Length):
110mm x 4.5" (113mm)
Rotation Angle of Focusing Ring:
Aperture Range:
T2 to T22
Minimum Focus Distance:
9" (25cm)
Max Angle of View:
80degrees - Super 35 Format
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