FujiFilm GFX 50R Owner's Manual page 195

•
N
AE LOCK ONLY, AF LOCK ONLY, AE/AF LOCK, and AF-ON cannot be
assigned to the touch function buttons (T-Fn1 through T-Fn4).
•
Function button assignment options can also be accessed by hold-
ing the DISP/BACK button.
AF-ON
If AF-ON is selected, you can press the control instead of keeping
the shutter button pressed halfway.
MODELING FLASH
If MODELING FLASH is selected when a compatible shoe-mount-
ed fl ash unit is attached, you can press the control to test-fi re the
fl ash and check for shadows and the like (modeling fl ash).
TTL-LOCK
If TTL-LOCK is selected, you can press the control to lock fl ash
output according to the option selected for F FLASH SETTING >
TTL-LOCK MODE (P 125).
BUTTON/DIAL SETTING
175
8