Maximum Format Cover
Two opposing focus scales - metric & footage. Scales marked from infinity to MOD.
Focus Drive Gear
140 teeth 0.8 metric module x 6.0mm wide 103mm from the image plane.
Two opposing linear T scales - whole and third stops marked.
Iris Drive Gear
134 teeth 0.8 metric module x 4.0mm wide x 81mm from image plane.
The optics are designed to give maximum performance at full aperture with superior control of flare, distortion and spherical aberration.
Accessible via cable connector near the lens mount and contacts in mount that sync with /i compatible cameras and accessories.
All Cooke S7/i prime lenses are colour balanced, colour-matched and compatible with Cooke S4/i, miniS4/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.
Every index mark is labeled. More detailed markings allow for more detailed focus control.
Our 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.
Cooke Hardened PL Mount with /i Technology contact.
Large, clear numerals on both sides of the focus barrel benefit the focus puller when shooting under difficult lighting conditions.
All Cooke 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.
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.
A nine-leaf linear module iris assembly is fitted into the Cooke S7/i Primes.
The lenses are designed for all shooting applications, including handheld and Steadicam, providing comfortable balance ratio with the latest compact cameras.
Reliability and Service
Cooke S7/i prime lenses are designed to meet a market requirement for fully reliable performance with a minimum of downtime.