The ARRI OCU-1 Operator Control Unit is an addition to the WCU-4/Hi-5 lens control systems, enabling operators to override and return focus, iris, or zoom controls at the touch of a button. With the OCU, camera operators retain the ability to control the lens at all times, even when motors are attached. The override function enables the operator to make adjustments when critical focus is slightly off, and gives the focus puller an override indication on the WCU-4. It features the same control wheel, display, and LBUS integration as you will find on the ARRI Master Grips but in a conveniently smaller form factor.