Instruction manual

ARRI WCU-4 User Manual 5
The WCU-4 is an all-inclusive hand unit offering up to 3-axes lens control. It includes
a newly designed, super-smooth focus knob with adjustable friction and backlit, focus
rings that are well readable in the dark. The whole unit is completely splash proof
for ARRI typical reliability. The slider has its scale on the 3” display, providing clearly
readable T-stop numbers.
The left side handle includes an ergonomically designed, pressure-sensitive zoom
knob. A user programmable button underneath the handle provides quick access to
functions like quick zoom (ZAP) or focus setting marks. A hand strap provides extra
stability and leaves the holding hand’s thumb free, thus allowing even the most
challenging parallel shifts of iris and focus at the same time.
The large 3” transfl ective TFT display refl ects ambient light and thus remains clearly
visible even in direct sunlight while saving battery power. It provides enough room
for status information of camera and hand unit, measured distances from ultrasonic
devices or lens data in a graphical form. Motor limits can be easily set by pressing one
of the sealed, backlit buttons next to the display.
ARRI Lens Data Display functionality is integrated and when used with the ALEXA
camera, the unit displays camera settings and status information. Pre-marked focus
rings can be used with WCU-4’s integrated lens mapping, providing comfort and ease
of use when working with different lenses.
The optional ALEXA Remote License activates remote camera setup capabilities via
WCU-4 for ALEXA Plus, ALEXA Plus 4:3, ALEXA XT Plus, ALEXA Studio, and
ALEXA XT Studio cameras. This includes setting frame rate, shutter angle, exposure
index, white balance, and monitor outputs.
Users can save their preferred WCU-4 settings on an SD card, enabling them to
immediately personalize any WCU-4, anywhere in the world.
One of the most ground-breaking new features of the WCU-4 is the option to use
Vibration-Markers, which provide haptic feedback for electronic markers.
Essentially, focus pullers can set marks, and the unit will vibrate to warn them when
they are at their pre-set marks. This allows them to keep their eyes on the performers
at all times, leading to greater accuracy of focus.
The WCU-4 is designed to be upgradable. New fi rmware versions and future feature
options can be easily installed to the unit via SD card. Various mounting points allow
mounting of accessories. The unit is powered by an affordable camcorder battery and
is compatible to existing ARRI motor controllers equipped with the white coded radio
modem. It is also easily serviceable, with many exchangeable components, including
the display.
2 Introduction
• Radio control of IRIS/FOCUS/ZOOM lens motors
• Numerical and grafi cal lens data display *
• Remote switch camera REC/STANDBY (RUN/STOP)
• Camera information and control for ALEXA Plus and ALEXA Studio type cameras *
• Connects to ARRI WHITE radio remotes:
ALEXA Plus and ALEXA Studio type cameras, UMC-3A, ARRI cameras with
white coded radio modem installed
* full funcionality requires ALEXA SUP8.0 software packet and the optional WCU-4 ALEXA remote license
WCU-4 Functions