Cooke S4i 21mm T2.1


Cooke S4i 21mm T2.1 prime PL mount. 110mm lens front diameter.


Lens Groupset

Cooke S4i prime


PL Mount

Sensor Size/Coverage


Award winning Cooke S4 Prime Lenses were designed and developed in close technical collaboration with industry professionals. They are colour-matched and compatible with all contemporary Cooke cine lenses.

Cooke S4 optics 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. Modular construction increases ease of maintenance and serviceability.

/i Technology Logo Technology

All S4 Prime lenses stocked by VMI are equipped 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.

T-stop Range Angular Rotation of Iris Scale Miniumum Marked Object Distance
Units degrees mm inches
21mm S4/i T2-T22 96 250 9
Close Focus from Lens Front Angular Rotation to MOD Endstop Maximum Diagonal Angle of View for Super 35 Format
Units mm inches degrees degrees
21mm S4/i 85 2.5 270 71
Length from Front of Lens to Lens Mount Max Front Diameter Total Weight

mm inches mm kg lbs
21mm S4/i 113 4.5 110 2 4.4
S4i 21mm T2.1
Lens Front Cap (Cooke 110mm)
Lens End Cap (PL)

Peli Case: 39 x 29 x 22   6.40kg
Country Of Origin: UK

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