A8: Assign Af-On Button - Nikon D4s User Manual

a8: Assign AF-ON Button

Choose the function performed when the
B button is pressed.
Option
A AF-ON
B AE/AF lock
C AE lock only
AE lock (Reset
D
on release)
E AE lock (Hold)
F AF lock only
None
Pressing the B button initiates autofocus.
Focus and exposure lock while the B button is
pressed.
Exposure locks while the B button is pressed.
Exposure locks when the B button is pressed, and
remains locked until the button is pressed a second
time, the shutter is released, or the standby timer
expires.
Exposure locks when the B button is pressed, and
remains locked until the button is pressed a second
time or the standby timer expires.
Focus locks while the B button is pressed.
No operation is performed when the B button is
pressed.
G button ➜ A Custom Settings menu
Description
U
317