a1: AF-C Priority Selection

G button UA Custom Settings menu

Choose whether photos can be taken before the camera focuses when AF-C is selected.

Option		Description
G	[Release]	Photos can be taken whenever the shutter-release button is pressed (release priority).
B	[Focus + release]	Priority is normally given to release, but if the subject is dark or low contrast and the camera is in continuous-release mode, priority will be given to focus for the first shot in each series. For the remaining shots, priority will be given to release regardless of focus. This helps ensure that the first shot in each series is in focus.
F	[Focus]	Photos can be taken only when the camera is in focus (focus priority).