Pre-Af; Af Illuminator - FujiFilm X-T2 Owner's Manual

PRE-AF

If ON is selected, the camera will continue to adjust
focus even when the shutter button is not pressed
halfway. Note that this increases the drain on the
battery.
ON

AF ILLUMINATOR

If ON is selected, the AF-assist illuminator will light to
assist autofocus.
ON
O
The camera may be unable to focus using the AF-assist
illuminator in some cases. If the camera is unable to fo-
cus, try increasing the distance to the subject.
Avoid shining the AF-assist illuminator directly into your
subject's eyes.
Options Options
Options Options
AF/MF SETTING
OFF
OFF
139
6