FujiFilm X-E3 Owner's Manual page 294

Setting Setting
K
Master
K
Number of
fl ashes
L
Channel
L
Frequency
10
274
Assign the master fl ash to group A (Gr A), B (Gr B), or
C (Gr C). If OFF is selected, output from the master
fl ash will be held to a level that does not aff ect the
fi nal picture. Available only if the unit is mount-
ed on the camera hot shoe as a master fl ash for
FUJIFILM optical wireless remote fl ash control in
TTL, TTL%, or M mode.
Choose the number of times the fl ash fi res each
time the shutter is released in MULTI mode.
Choose the channel used by the master fl ash
for communication with the remote fl ash units.
Separate channels can be used for diff erent fl ash
systems or to prevent interference when multiple
systems are operating in close proximity.
Choose the frequency at which the fl ash fi res in
MULTI mode.
External Flash Units
Description Description