Cooke 40mm T2.0 S4/i Prime Lens for PL Mount, Feet

Cooke S4 optics offer superb optical and mechanical performance, control of flare, distortion, veiling glare and spherical aberrations at full aperture, with the cam-type focus mechanism allowing for smooth focus adjustments.High-quality performanceDesigned and developed in close technical collaboration with industry professionals.ConsistentModular construction increases ease of maintenance and serviceability.ConvenientColor-matched and compatible with Cooke 5/i, miniS4/i and Anamorphic/i.Connected/i Technology provides vital metadata for consistency and reproducibility.TechnologyCooke's /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.Expertly CraftedGrinding & PolishingClassic polishing techniques ensure the highest level of precision.MetrologyRegular, accurate measurements are key to delivering consistent quality.Coating & CementingTraditional coating machines are used to deposit a thin film onto the glass.EdgingMeticulous edging ensures that glass diameters are always faultlessly rounded.Cleaning & AssemblyLenses are rigorously trialled, checked, modified, cleaned and rechecked.Features:Optical DesignThe S4/I series are a fully comprehensive lineup of 19 matched focal lengths. S4/i lenses are designed to provide maximum performance at full aperture with superior control of flare, distortion and spherical aberration - ensuring the Cooke Look remains across the seriesApertureAll S4/i prime lenses cover Super 35mm formatsFocus MovementErgonomically designed to have smooth and accurate travel - whilst utilising precision mechanics to provide a consistent feel in operation through the entire focus movement./i TechnologyThe Cooke /I Technology ecosystem provides critical lens metadata such as focus and Iris position as well as individually calibrated lens distortion and shading maps. Suitable for the most modern VFX applications such as Virtual Production shooting.StandardisedAll S4/I series Prime lenses have standardised 0.8 MOD focus and Iris drive gearsColor BalanceAll S4/i prime lenses are color balanced and color matched - ensuring consistency across the seriesIrisThe S4/I series of prime lenses feature an eight-leaf linear module iris assembly. Providing an aperture range of T2-T22Focus ScalesAll lenses have factory calibrated focus scales with clearly identifiable distance marksCamera MountsPrecision PL Mount with /i Technology Electrical ContactsExternal FinishDurable and Hard wearing surface finish to meet the needs of the most demanding environmental conditionsReliability and ServiceAll S4/I series prime lenses are designed for full performance and reliability with a minimum of downtimeWeight/Size RatioOptimised for the series and suitable for all shooting applications