ARRI WRC-1 - Manual (Page 13)

13
3.2.2 WRC mode
The WRC mode offers convenient programming and easy
adjusting of the camera speed, the shutter angle and the
iris of the lens.
If the iris control is not activated (IRIS sliding switch ‘OFF’),
the OPEN button serves as the PHASE button on the
camera
➪ photo .
The left rotary switch (WRC) ➪ photo is for selecting
the parameter which is to be changed
(master value; for definition, see Glossary):
• camera speed,
• shutter angle or
• iris.
The right rotary switch (COMPENSATION)
➪ photo
is for setting how the change in exposure caused by the
adjustment is to be compensated for
(slave values; for definition, see Glossary).
Example: the WRC rotary switch is set to fps, the COMPEN-
SATION rotary switch is set to Iris. The camera speed is
adjusted with the handwheel, while the WRC-1 automatically
keeps the film exposure constant, adjusting the iris of the
lens.
Depending on the chosen settings and the compensation
method, different ramp times are possible. The minimum
ramp time is calculated by the WRC-1.
Note: The term ‘adjust’ as used in this instruction
manual describes each direct adjustment of a
parameter using the handwheel.
Parallel to this adjustment, the WRC-1 can
automatically compensate the resultant difference
in exposure.
The term ‘ramp’ describes adjustment actions
which automatically take place over a predefined
period of time, i.e. these actions are not directly
controlled using the handwheel. They run con-
tinuously for a predefined period of time after
pressing the RAMP button. Resultant differences
in exposure can also be compensated for.
Functions