ARRI FF-4 Basic Follow Focus Unit lens so there is no concern

so there is no concern about exposure variations when cutting between Summicron-C lenses

Part of a set of 16 lenses ranging from 12mm to 150mm

Convenient thumbscrews enable you to attach and remove the display on-the-fly

Its fast T1

distortion

ARRI FF-4 Basic Follow Focus Unit lens so there is no concernThe sleek, black finished ARRI FF 4 Basic Follow Focus Unit consists of a single sided follow focus with one standard knob. This robust, economical unit slides onto a pair of lightweight 15mm rods (rods not included). The FF 4 is designed with a 1: 2 knob to gear ratio for smooth, accurate focus pulls on a variety of lenses. A required focus gear is not included with this unit. The FF 4 features a modular design that is compatible with most ARRI