- Optical Design: The optics are designed to give maximum performance at full aperture with superior control of flare, distortion and spherical aberration.
- Electronics: Accessible via contacts in PL mount that sync with /i compatible cameras.
- Colour Balance: All miniS4/i prime lenses are colour balanced, colormatched and compatible with Cooke 5/i, S4/i and Anamorphic/i.
- Aperture: All miniS4/i primes have a true T2.8 aperture and cover Super 35mm format.
- Index Marks: Every index mark is labelled. More detailed markings allow for more detailed focus control.
- Focus Movement: 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.
Camera MountsCooke Hardened PL Mount with /i Technology contact.
- Focus Scaling: Large, clear numerals on both sides of the focus barrel benefit the focus puller when shooting under difficult lighting conditions.
- Compatibility: All Cooke miniS4/i primes, except the 18mm, have a common fixed front diameter of 87mm, with a focus drive gear of 121T x 0.8 mod and an iris drive gear of 119T x 0.8.
- External Finish: 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.
- Iris: An eight-leaf linear module iris assembly is fitted into miniS4/i primes with an aperture range of T2.8 to T22.
- Weight/Size Ratio: The lenses are designed for all shooting applications, including handheld and Steadicam, providing comfortable balance ratio with the latest compact cameras.
- Reliability and Service: miniS4/i prime lenses are designed to meet a market requirement for fully reliable performance with a minimum of downtime.