Abstract: An automatic follow focus system includes a camera unit having a main body, a circular drive gear for engaging the focus control of a camera lens, an electric motor for operating the circular drive gear, and a rail mounting unit. One or more target beacons are in wireless communication with the camera unit, and a remote operation unit controls an operation of the camera unit. The system includes functionality for determining a separation distance between the camera unit and each target beacon, and automatically operates the motor of the camera unit to adjust the focus control of the camera lens based upon the determined separation distance.