Nikon D3 - Manual (Page 384)

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AF Fine Tune
Fine-tune focus for up to 20 lenses. 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 lenses can
be stored.
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