The award-winning Cooke S4 lenses were designed and developed in close technical collaboration with industry professionals. They are colour matched and compatible with Cooke 18-100 mm T3.0 and 25-250 mm T3.7 zooms, 15-40 mm, T2.0 CXX and SK4 16 mm lenses.

Cooke S4 optics deliver superb optical and mechanical performance, control of flare, distortion, veiling glare and spherical aberrations at full aperture. The cam focus mechanism allows for smooth focus adjustments. Modular construction facilitates servicing and maintenance.

Technology

Since February 2005, all our S4 lenses (and the CXX zoom) have been equipped with /i technology. S4/i lenses are designed for all professional PL mount film and electronic cameras. /i technology provides cinematographers and camera operators with essential information on lens settings, focus distance, aperture and depth of field, hyperfocal distance, serial number, owner data, lens type and focal length in metric and feet measurements. For zooms, zoom position is displayed.

65 Soft Effects Attachment

The 65 soft effects attachment is designed for the S4/i 65 mm and 75 mm lenses (via the Cooke 75 mm adapter ring). The design of this attachment is based on Cooke's PS945 soft focus lens for 4x5 large format photography. You can see the effect in the photographic samples taken with the PS945 lens. The effect is high resolution with stunning glow in the highlights - subtle, but more pronounced at full aperture at T2, becoming less pronounced as you stop down. (Effect T2 to T4 with the 65 mm lens; T2 to T5.6 with the 75 mm lens.)

Cooke S4/i Lens Awards

1998 Cinec Technical Excellence Award, Germany
1999 Academy of Motion Picture Arts and Sciences Scientific and Engineering Award for optical and mechanical design
2000 Primetime Emmy Award for Outstanding Achievement in Engineering Development
2001 Two Queen's Awards for Enterprise - International Trade and Innovation, England
2001 Winner, Exporter of the Year, International Business Awards 2001, Export Times and Trade Partners UK
2001 Winner, Product Innovation, International Business Awards 2001, Export Times and Trade Partners UK
2007 NAB2007 Premier Product Award - S4/i System



- Maximum format coverage -- 30 mm diameter (Super 35 mm format)

- Focus scales -- Two opposing focus scales - metric or feet. Scales marked from infinity to minimum focus distance.

- Focus drive gear -- 140 teeth metric module 0.8 x 6.0 mm wide x 98 mm from image plane. 140 teeth module 0.8 x 6.0 mm wide x 99 mm from image plane (300 mm)

- Iris scales -- Two opposing linear T scales - full stops and thirds marked.

- Iris drive gear -- 134 teeth metric module 0.8 x 4.0 mm wide 79.5 mm from image plane.

- Internal front filter mount -- Internal thread for M105 x 0.75 pitch filter adapter (not applicable for 12 mm and 14 mm). M120 x 1.0 pitch (150 mm). M131 x 1.0 pitch (180 mm, 300 mm)

Key Features

Optical Design -- The optics are designed to deliver maximum performance at full aperture with superior control of flare, distortion and spherical aberration.

Electronics -- Accessible via contacts in the PL mount that synchronise with /i compatible cameras.

Colour Balance -- All S4/i lenses are colour balanced, colour matched and compatible with Cooke 5/i, miniS4/i and Anamorphic/i.

Aperture -- All S4/i lenses have a true T2 aperture and cover the Super 35 mm format, except the 300 mm (2.8).

Index Marks -- Each index mark is labelled. More detailed markings allow for more precise focus control.

Focus Movement -- Our Oscar®-winning cam focus movement, combined with the additional advantage of a large lens barrel diameter, has increased the number of focus marks, particularly for close-ups. Spherical aberration has been controlled throughout the focal range to eliminate compensation for back focus changes with aperture. A four-point contact bearing ensures smooth, positive, play-free movement.

Camera Mounts -- Reinforced Cooke PL mount with /i technology contacts.

Focus Calibration -- Large, clear numbers on both sides of the focus barrel benefit the focus puller when shooting in difficult lighting conditions. In addition, the entrance pupil position is engraved on the lens.

Compatibility -- All Cooke S4/i lenses have a common fixed front diameter of 110 mm (except for 12 mm, 150 mm, 180 mm, 300 mm) with a 140T x 0.8 mod focus drive gear and a 114T x 0.8 iris drive gear

External Finish -- All Cooke lenses feature a scratch-resistant PTFE hard anodised finish, providing a durable, hardwearing surface to meet the most demanding environmental conditions.

Iris -- An eight-blade linear iris assembly is fitted to the S4/i lenses with an aperture range from T2 to T22. (Except 300 mm)

Weight/Size Ratio -- The lenses are designed for all shooting applications, including handheld and Steadicam work, offering a comfortable balance ratio with the latest compact cameras.