ARRI K2.47050.0, Instruction Manual

Page: 94 / 119

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5.10.4 ADJUST
In order to use the Ground Class Cancellation (GGC) software, it is
necessary to grab either three calibration images in advanced mode or
one calibration image in basic mode. For this, point the camera to a white
surface, e. g. a piece of paper. Make sure it is evenly illuminated with
sufficient light. If exposure is out of range, a warning will appear.
A wizard will guide through the procedure. This wizard is different
depending on the GGC Mode setting (basic or advanced) and the Lens
Data Lenses and Lens Control Motors.
Move the cursor by using the
keys
Ê
and
Ë
to the line
– ADJUST
→
Photo . Pressing the
keys Í or Ì will activate the
wizard, depending on the
setting GGC MODE and if LDS
Lenses and Lens Control Motors
are used.
If there is not enough or too much light for this procedure, or if the chart is
unevenly lit, the wizard will stop and a warning will appear:
Increase or decrease the light on the test chart or make sure that the chart
is evenly lit. The warning “The chart is not evenly illuminated” may also
appear if the chart is not a uniform structure but a real image.
As a rule of thumb, we recommend 4,500 Lux or 400 Foot-candles which
equals f-stop 5.6 for a 100 ASA film at 24 FPS and 180° shutter.