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The OConnor O-Focus Hard Stop Handwheel is compatible with both OConnor O-Focus DM and CFF-1 follow-focus systems and is designed with a transmission ratio of 1:1 for use with photo lenses (but accommodates cine lenses also).
The wheel can be used to set minimum and maximum focus points for infinite rotation lenses, and to carry out hard stop pulls, and it is equipped with an on/off switch that at the employ of a hand instantly disengages end stops so that important adjustments can be made during sudden moments in a scene.
The wheel comes ready with a marking disk and has an index screw that tightens to set a witness marker into a position. The wheel attaches and secures tight by lock lever onto either side of a main bridge.
Compatible with O-Focus DM and CFF-1 systems.
Features a transmission ratio of 1:1, best for still lenses.
Affords min and max focus point settings and hard stop pulls.
Equipped with an on/off switch that instantly disengages end stops.