Nikon D3X - Manual (Page 387)

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AF Fine Tune
Fine-tune focus for up to 20 lens types. AF tuning is not
recommended in most situations; use only when required.
Option Description
AF fine
tune
(On/Off)
• [On]: Turn AF tuning on.
• [Off] (default): Turn AF tuning off.
Saved
value
Tune AF for the current lens (CPU
lenses only). Press
1 or 3 to
choose a value between +20 and
–20. Values for up to 20 lens types
can be stored. Only one value can
be stored for each type of lens.
Default
Choose the AF tuning value used
when no previously saved value
exists for the current lens (CPU
lenses only).
Move focal
point away
from camera.
Current
value
Move focal
point toward
camera. Previous
value