Nikon D810 - Manual (Page 121)

97
2
Lock focus.
AF-C focus mode (
0 87): With the
shutter-release button pressed
halfway (q), press the A AE-L/AF-L
button (w) to lock both focus and
exposure (an AE-L icon will be
displayed in the viewfinder). Focus
will remain locked while the
A AE-L/AF-L button is pressed, even
if you later remove your finger
from the shutter-release button.
AF-S focus mode : Focus locks
automatically when the in-focus
indicator (I) appears, and remain locked until you remove
your finger from the shutter-release button. Focus can also
be locked by pressing the A AE-L/AF-L button (see above).
3
Recompose the
photograph and shoot.
Focus will remain locked
between shots if you keep
the shutter-release button
pressed halfway (AF-S) or
keep the A AE-L/AF-L
button pressed, allowing several photographs in succession
to be taken at the same focus setting.
Do not change the distance between the camera and the
subject while focus lock is in effect. If the subject moves, focus
again at the new distance.
Shutter-release button
A AE-L/AF-L
button