The ARRI WCU-4 Wireless Follow Focus System is a 3-axis handheld controller featuring an integrated lens display. Control camera functions, focus, iris, and/or zoom from a distance when shooting handheld or using a stabilizer, gimbal or crane. The WCU-4 is compatible with the ARRI ALEXA Mini, ALEXA Plus, and Studio cameras, and with ARRI UMC-4, SMC-1, EMC-1, and AMC-1 motor controllers. Camera functions are controllable for ARRI ALEXA Mini, Plus and Studio, and ARRI AMIRA when used with the UMC-4 motor controller.


  • Handheld, wireless focus, iris, and zoom lens control unit
  • Camera function control for ARRI ALEXA Mini, Plus & Studio, and Amira when used with the UMC-4 motor controller
  • Vibrating markers, backlit focus knob, and pre-marked focus rings for ease of use
  • Multiple mounting options include 3/8″-16, 1/4″-20, and M4 mounting points

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