Focus Lock - Nikon N1538 Reference Manual

Focus Lock

Focus lock can be used to change the composition after focusing
in AF-A, AF-S, and AF-C focus modes (0 82), making it possible to
focus on a subject that will not be in a focus point in the final
composition. If the camera is unable to focus using autofocus
(0 86), focus lock can also be used to recompose the
photograph after focusing on another object at the same
distance as your original subject. Focus lock is most effective
when an option other than e (Auto-area AF) is selected for AF-
area mode (0 87).
1
Focus.
Position the subject in the selected focus point
and press the shutter-release button halfway to
initiate focus. Check that the in-focus indicator (I)
appears in the viewfinder (viewfinder photography) or that
the focus point has turned green (live view).
Viewfinder photography
A
Autoexposure Lock
Pressing the A (L) button in Step 2 also locks exposure (0 130).
Live view
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