Nikon D4S - Manual (Page 336)

314
U
When AF-S is selected for viewfinder photography ( 0 97), this
option controls whether photographs can be taken only when the
camera is in focus (focus priority) or whenever the shutter-release
button is pressed (release priority).
Regardless of the option selected, if the in-focus indicator ( I ) is
displayed when AF-S is selected for autofocus mode, focus will lock
while the shutter-release button is pressed halfway. Focus lock
continues until the shutter is released.
This option controls how autofocus adjusts to sudden large
changes in the distance to the subject when AF-C is selected during
viewfinder photography (
0 97).
a2: AF-S Priority Selection
G button
➜ A Custom Settings menu
Option Description
G Release
Photos can be taken whenever the shutter-release
button is pressed.
F Focus
Photos can only be taken when the in-focus indicator
(
I) is displayed.
a3: Focus Tracking with Lock-On
G button
➜ A Custom Settings menu
Option Description
C 5 (Long)
When the distance to the subject changes abruptly, the
camera waits for the specified period before adjusting
the distance to the subject. This prevents the camera
from refocusing when the subject is briefly obscured by
objects passing through the frame. Note that 2,
1 (Short), and Off are equivalent to 3 (Normal) when
3D-tracking or auto-area AF is selected for AF-area mode
(
0 100).
( 4
D 3 (Normal)
) 2
E 1 (Short)
Off
The camera immediately adjusts focus when the
distance to the subject changes. Use when
photographing a series of subjects at varying distances
in quick succession.