ARRI UMC-4

Universal Motor Controller UMC-4

3-axis wireless motor controller with LDS lens data functionality

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-performance radio
system offers reliable radio connectivity.
The UMC-4 incorporates the LDS Lens Data Archive and
generates frameaccurate 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 and inclinometer
data, 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.
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. 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. All packed in a durable, splash-proved
housing.