The S4 lenses
represent a major advance in fixed focal length lenses for 35mm
format professional cinematography.
The optics are designed to give maximum performance at full
aperture with superior control of flare, distortion and spherical
aberration.
The S4/i system is designed for use with LDS equipped cameras.
Our Academy Award® winning cam-style focus movement coupled
with the added benefit of a large lens barrel diameter, has
allowed for an increased number of focus markings, particularly
at close focus. Spherical aberration has been controlled throughout
the range of focal lengths to eliminate compensation of changes
in back focus with aperture. A four-point contact bearing provides
a smooth positive backlash-free movement.
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