UMC-4 Universal Motor Controller

UMC-4 Universal Motor Controller
Manufacturer: ARRI
Model Number: K2.0002058 (K20002058)
Website (Commercial/Pro): ARRI Commercial Website
Product ID: MPS12744
R2 Description: Camera Support, ARRI Universal Motor Controller UMC-4 {WCU Brain)
Alternative Product Name: umc4, umc 4, wcu brain
Product ID: MPS12744 Category: Tag:

Product Overview:

3 Axis Lens Control
The Universal Motor Controller UMC-4 is an advanced 3-axis motor controller. Up to three different hand units
can connect to the UMC-4 at the same time, controlling focus, iris and zoom on any camera. The intuitive user
interface helps to quickly setup the system and makes it easy to use. The high-quality outdoor antenna offers
improved durability and reliable radio connectivity.


Lens Data
The UMC-4 incorporates the LDS Lens Data Archive and generates frame-accurate lens data with any lens.
Lens data is used for lens mapping to pre-marked focus rings and depth-of-field display on the WCU-4 hand unit.
It also enables focus tracking – setting the focus motor to continuously follow a subject by using an ultrasonic
distance measurer. For VFX tasks in post, the UMC-4 records lens data with timecode, helping match the virtual
lens to the recorded image.


The UMC-4 supports internal and external timecode that is recorded with frame-accurate lens data onto SD card,
making the lens data usable for postproduction. The internal timecode clock can be jam-synced from external
devices, but can output LTC timecode as well.


Multiple Interfaces
The UMC-4 includes multiple interfaces for maximum flexibility on set. Two serial interfaces connect peripheral
equipment such as ARRI’s UDM-1 distance measure or motion control systems. Optional connector modules
interface directly with focus and zoom demands from Fujifilm and Canon. An Ethernet connector integrates
the UMC-4 with standard IT equipment, allowing Ethernet-based system control and remote access to the
lens data files on SD card.


Exceptional Quality and Service
The UMC-4 is splash-proof and embodies the reliability and durability for which ARRI is famous. The worldwide
ARRI Service network ensures rapid second level support if needed. New firmware versions can be installed to
the unit via SD card within seconds.


Compatible to

  • Wireless Compact Unit WCU-4
  • Single Axis Unit SXU-1
  • Zoom Main Unit ZMU-3A
  • Wireless Zoom Extension WZE-3
  • Controlled Lens Motor CLM-2
  • Controlled Lens Motor CLM-3
  • Controlled Lens Motor CLM-4
  • Lens Data Encoder LDE-1
  • Ultrasonic Distance Measure UDM-1
  • All ALEXA camera models
  • All AMIRA camera models
  • All other cameras

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