Wooden Camera’s UFF-1 Universal Follow Focus is designed to fit on any of the three major rod standards, 15mm LWS, 15mm studio, and 19mm studio without rod adapters. The UFF-1 achieves this through movable rod clamps that lock into marked positions along the follow focus’ bridge. The swinging arm allows lenses of multiple sizes to be used, and provides extra reach for using with the studio rod standards. Drive gears can be mounted to either side of the arm, and the arm itself can be mounted to either side of the gear drive.