Glossary, Projection speed, Arri service – ARRI WRC-1 User Manual

Page 183: Glossar y

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8. Glossary

Adjusting:

The term ‘adjust’ as used in this instruction
manual describes a manual alteration of one
of the adjustable parameters using the
handwheel.

Ramp:

The term ‘ramp’ describes adjustment actions
which run automatically over a predefined
period of time after pressing the RAMP button
in the camera run, i.e. these adjustments are
not controlled using the handwheel.

Master value: The parameter which is to be primarily

adjusted, i.e. the iris of the lens, the mirror
shutter angle, or the camera speed.

Slave value: Adjusting the master value alters the film

exposure. This difference in exposure can
be automatically compensated for by the
WRC-1. To do this, the WRC-1 adjusts the
other parameters, e.g. altering the camera
speed can be compensated for by the iris of
the lens or by the shutter angle as required.

Limit value: A limit value is either the left and right

handwheel end-stop, or the start and end
value of an adjusted parameter in the case
of a time-controlled ramp.

Fixed value: After defining the limit values, the remaining

exposure-related parameters which do not
change when adjustments are being made
must also be defined.
Example: if the camera speed has been
selected as the parameter to be adjusted,
the shutter angle and the aperture must be
defined in the next submenus, if these are
controlled by the WRC-1.

Screen time: The screen time is the time (in seconds)

needed for a projection at a selected
standard projection speed: 24, 25 and 30 fps
are available.

Glossar

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