Nikon D500 - Manual (Page 338)

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6
Perform auto AF fine-tuning.
Press the AF-mode and movie-record
buttons simultaneously and keep
them pressed until the dialog shown
in Step 7 is displayed (this should take
slightly over two seconds).
7
Save the new value.
Highlight Yes and press
J to add the
AF fine-tuning value for the current
lens to the saved values list (CPU
lenses only). Note that only one value
can be stored for each type of lens.
8
Enable AF fine-tuning.
In the camera setup menu, select AF
fine-tune > AF fine-tune (On/Off),
then highlight On and press
J.
AF-mode button
Movie-record button