The S4 design foregoes the usual helical thread method of focus adjustment in favor of Cooke's Academy Award®-winning cam mechanism. The smooth cam movement liberates the lens from a simple thread rotation giving the operator an appropriate rate of focus at all distances. The cam design also allows for better spaced and more detailed and visible index marks.
The S4s are reknowned for superb control of flare, distortion, veiling glare, and spherical aberrations at full aperture.
• Lenses available 12, 14, 16, 18, 21, 25, 27, 32, 35, 40, 50, 65, 65SF, 75, 75SF, 100, 135, 150, 180, 300mm
• T 2 to T 22 aperture
• Color matched with all other Cooke lenses
• Unmatched ergonomics for DPs and assistants on-set
• /i Technology included as standard
• Control of flare, distortion, veiling glare and Spherical averrations at full aperture
• Designed in the S4 tradition of serviceability
• Linear iris
• Award winning Cam-style focus
Large, clear numerals on both sides of the focus barrel benefit the focus puller when shooting under difficult lighting conditions.
All Cooke S4/i primes have a common fixed front diameter of 110mm (except for the 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 the Cooke S4/i primes with an aperture range of T2 to T22 (except 300mm).
The lenses are designed for all shooting applications, including handheld and Steadicam, providing comfortable balance ratio with the latest compact cameras.
Cooke S4/i prime lenses are designed to meet a market requirement for fully reliable performance with downtime.
All of our S4 Prime lenses (and CXX zoom lens) are supplied with /i Technology and 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. For zoom lenses, the zoom position is displayed.