Nikon F4S - Focus Hacking

Focus Tracking
When
shooting
a
moving
subject,
with
the
focus
mode
set
to
Continuous
Servo
Autofocus
and
the
film
advance
mode
to
Low-Speed
Continuous
(C1),
Focus
Tracking
is
automatically
activated
to
ensure
focused
images.
In
Focus
Tracking,
the
camera
analyzes
the
speed
of
the
moving
subject
according
to
focus
detection
data,
and
drives
the
autofocus
fens
by
anticipating
the
position
of
the
subject
at
the
exact
moment
of
exposure.
2. Position viewfinder focus brackets on subject.
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