Master Setting; Ch Setting - FujiFilm GFX 50s Owner's Manual

MASTER SETTING

Choose a fl ash group (A, B, or C) for the fl ash mounted on the
camera hot shoe when it functions as a master fl ash controlling
remote fl ash units via FUJIFILM wireless optical fl ash control, or
choose OFF to limit master fl ash output to a level that does not
aff ect the fi nal picture.
Gr A
N
This option can also be accessed via the fl ash settings menu.

CH SETTING

Choose the channel used for communication between the mas-
ter fl ash and remote fl ash units when using FUJIFILM optical
wireless fl ash control. Separate channels can be used for diff er-
ent fl ash systems or to prevent interference when multiple sys-
tems are operating in close proximity.
CH1
Options Options
Gr B
Options Options
CH2
FLASH SETTING
Gr C
CH3
OFF
6
CH4
115