S4/i 65mm
Cooke Optics
S4/i 65mm
Their optics – including a new eight-leaf linear module iris assembly – offer 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, while modular construction increases ease of maintenance and serviceability.
All Cooke S4 prime lenses are colour balanced to a specification within parameters approved by Kodak, and all have a true T2 aperture and cover Super 35mm format.
A 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. Large, clear numerals on both sides of the focus barrel benefit the focus puller when shooting under difficult lighting conditions.
All Cooke S4 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 provides a durable, hard-wearing surface to meet the most demanding environmental conditions. The lens is designed for all shooting applications, including handheld and Steadicam, providing comfortable balance ratio with the latest compact cameras.
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. For zoom lenses, the zoom position is displayed.
The lens /i electronics are accessible via cable connector near the lens mount and contacts in mount that sync with /i compatible cameras.
Product Weight: 3.55 lbs
Dimensions: 4.9"L x 110mm front diameter
Manufacturer Specs
Focus Scales: Two opposing focus scales - metric or footage. 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 third stops marked
Iris Drive Gear: 114 teeth 0.8 metric module x 4.0mm wide 84mm from image plane
Iris Drive Gear for LDS Lens: 136 teeth, 0.8 metric module x 6.0mm x 79.5mm from image plane
Internal Front Fitting Filter: Internal thread for filter adapter M105 x 0.75 pitch
Mount: Arriflex PL
T-stop Range: T2-T22
Angular Rotation of Iris Scale: 92°
Miniumum Marked Object Distance: 27" (700 mm)
Close Focus from Lens Front: 20" (473mm)
Angular Rotation to MOD Endstop: 300°
Maximum Diagonal Angle of View for Super 35 Format: 26°
Length from Front of Lens to Lens Mount: 4.9" (125mm)
Max Front Diameter: 110mm
Total Weight: 3.55 lbs (1.6kg)
