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Cooke 21mm S7/I Full Frame Plus Lens T2.0 (Feet)

Cooke 21mm S7/I Full Frame Plus Lens T2.0 (Feet)

B&H # COCKE721 MFR # CKE7 21
Special Order
Expected availability: 4-6 weeks

Product Highlights

  • Covers Full Frame and Larger Sensors
  • T2.0 Maximum Aperture
  • Focus Scales Marked in Feet
  • Color-Matches All Cooke Lenses
  • /i Technology
  • Cam-Type Focus Mechanism
  • Linear 9-Blade Iris
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This item is noncancelable and nonreturnable.

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Cooke S7/i overview

  • 1Description

The Cooke 21mm S7/I Full Frame Plus Lens T2.0 features focus scales marked in feet and covers full-frame and larger sensors. The S7/i lenses feature an aperture range of T2.0 to T22, while maintaining the same world-renowned Cooke image characteristics. A large focus scale with 270° of rotation provides for highly accurate focus pulls with easily read markings.

This 21mm prime lens features a PL mount, which makes it compatible with most commonly used professional film and digital cinema cameras. The cam-type focus mechanism provides smooth focus pulls, and the linear iris features nine-iris blades for round, natural-looking highlights. Color-matched to intercut with other Cooke lenses, this lens combines classic, hand-fitted construction and modern /i Technology for lens metadata capture.

Optical Design
The optics are designed to give maximum performance at full aperture with superior control of flare, distortion, and spherical aberration.
/i Electronics
Contacts in the mount sync with /i compatible cameras and accessories, providing lens information on focusing distance, aperture and depth of field, hyperfocal distance, serial number, owner data, lens type, and focal length in both meters and feet.
Color Balance
All Cooke S7/i prime lenses are color balanced to the Cook 5/i, S4/i, Anamorphic/i, and PANCHRO/i Classic lenses.
Cooke S7/i Primes have a true T2.0 aperture and cover 35/Super 35mm, Full Frame, and beyond.
Index Marks
Every index mark is labeled. More detailed markings allow for more detailed focus control.
Focus Movement
Academy Award-winning cam-style focus movement coupled with the added benefit of a large lens barrel diameter has allowed 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.
Focus Scaling
Large, clear numerals on both sides of the focus barrel enable your focus puller to work from either side of the lens without remarking or flipping the lens upside down.
S7/i Primes have a common fixed front diameter of 110mm, with a focus drive gear of 140T x 0.8 mod, and an iris drive gear of 134T x 0.8.
External Finish
A scratch-resistant PTFE hard anodized finish is provided on all Cooke lenses, providing a durable, hard-wearing surface to meet the most demanding environmental conditions.
A nine-leaf linear module iris assembly is fitted into S7/i primes with an aperture range of T2.0 to T22.
In the Box
Cooke 21mm S7/I Full Frame Plus Lens T2.0 (Feet)
  • Front Lens Cap
  • Rear Lens Cap
  • Set of Four Shims
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Cooke S7/i specs

    Focal Length 21mm
    Lens Mount ARRI PL
    Format Full Frame
    Image Circle 46.3 mm
    Maximum T-Stop T2.0
    Minimum T-Stop T22
    Diagonal Angle of View Super35: 70°
    Full Frame: 91°
    Minimum Focus Distance from Image Plane 14" / 35.56 cm
    Iris Blades 9
    Gear MOD & Pitch Focus: 0.8 MOD / 32 Pitch
    Iris: 0.8 MOD / 32 Pitch
    Front Diameter 110 mm
    Focus Scales Imperial
    Focus Rotation 270°
    Iris Rotation 90°
    Electronic Communication Yes
    Length 7.44" / 18.90 cm
    Weight 7.3 lb / 3.3 kg

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    Cooke S7/i accessories

    Designed for use with:

    • AJA CION
    • Canon EOS C700 FF PL
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