FujiFilm X-Pro2 - Manual (Page 94)

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Focus/Exposure Lock Focus/Exposure Lock
To compose photographs with off -center subjects:
1 Focus: Position the subject in the focus frame and press the shutter button half-
way to lock focus and exposure. Focus and exposure will remain locked while
the shutter button is pressed halfway (AF/AE lock).
P
R Focus and exposure can also be locked with the AF-L and AE-L buttons, respectively (if AE/AF LOCK is
selected for D BUTTON/DIAL SETTING > AF-LOCK MODE, pressing the AF-L button will lock both focus
and exposure; P 113).
2 Recompose: Keep the shutter button pressed halfway or keep the AF-L or AE-L but-
ton pressed.
R Focus and/or exposure will remain locked while the AF-L or AE-L button is pressed,
whether or not the shutter button is pressed halfway. If AE&AF ON/OFF SWITCH
is selected for
D BUTTON/DIAL SETTING > AE/AF-LOCK MODE (P 113), focus and/
or exposure lock when the button is pressed and remain locked until the button is
pressed again.
P
3 Shoot: Press the button all the way down.
R The roles of the AE-L and AF-L buttons can be reversed using D BUTTON/DIAL SETTING > AE-L/AF-L BUTTON
SETTING ( P 113).