Cooke S4/i optics offer superb optical and mechanical performance, control of flare, distortion, veiling flare and spherical aberrations at full aperture, with the cam-type focus mechanism allowing for smooth focus adjustments and mechanical robustness. The addition of Cooke Idata to this set of exquisite S4’s brings them completely up-to-date with modern workflows and they couple fantastically with our Alexa 35’s capturing the classic, soft and rosy ‘Cooke look’ in true 4K.