Nikon F4 Instruction Manual page 24

2
!~.
\
' I
,;, 'I
:IVI
r
I
In the autofocus mode, position autofocus sensor area on
subject, lightly press shutter release button and confirm in-
focus indicator LED (e ) appears in the viewfinder. (In Focus
Tracking, the in-focus LED does not appear - see page 37.)
Keep your hands off the lens focus ring when the focus mode
selector is set to S or C.
If
( ~)
does not disappear, the subject is closer than the closest
focusing distance of the lens in use. Move back from the
subject.
24
In the S (Single Servo Autofocus) mode, the shutter can be
released only when the in-focus indicator LED appears; once
the LED appears, focus is locked as long as the shutter release
button is lightly pressed.
If the subject moves and the focusing distance changes,
refocus by briefly removing finger from shutter release button
and lightly pressing again to reactivate autofocus operation, or
use Continuous Servo Autofocus mode or Focus Tracking. See
pages 35 and 37.