The Cooke S4/i 21mm Prime T2.0 offers 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. 

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.

Product Highlights:

• Maximum Format Cover: 30mm diameter (Super 35mm format)

• Focus Scales: two opposing focus scales (metric or feet); 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 1/3 stops marked

• Iris Drive Gear: 134 teeth 0.8 metric module x 4.0mm wide x 79.5mm from image plane

• Internal Front Fitting Filter: internal thread for filter adapter M105 x 0.75 pitch (12mm and 14mm not applicable)

• Electronics accessible via contacts in PL mount that sync with /i compatible cameras