FujiFilm GFX 100II Owner's Manual page 434

COMMANDER(OPTICAL)
The options will be displayed if the unit is currently functioning
as a commander for Fujifi lm optical wireless remote fl ash control.
MODE
COMMANDER(OPTICAL)
ADJUST
END
Fujifi lm optical wireless remote fl ash control off ers a choice of
four channels (Channels 1 through 4) for the exchange of optical
signals between the commander and remote fl ash units. Sepa-
rate channels can be used for diff erent fl ash systems or to pre-
vent interference when multiple systems are operating in close
proximity.
The fl ash units can also be placed in up to
three groups (A, B, and C) and fl ash mode
and fl ash level adjusted separately for C
A
each group.
B B
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