Nikon D3X - Manual (Page 359)

333
U
f4: Assign FUNC. Button
Choose the role played by the Fn button,
either by itself ([FUNC. button press]) or
when used in combination with the
command dials ([FUNC. button+dials]).
❚❚FUNC. Button Press
Selecting [FUNC. button press] for Custom Setting f4 displays the
following options:
Option Description
q
Preview *
Press the Fn button to preview depth of field
(pg. 113).
r
FV lock *
Press the Fn button to lock flash value (SB-900,
SB-800, SB-600, SB-400, and SB-R200 flash units only,
pg. 198). Press again to cancel FV lock.
B
AE/AF lock
Focus and exposure lock while the Fn button is
pressed.
C
AE lock only Exposure locks while the Fn button is pressed.
D
AE lock
(Reset on
release)
*
Exposure locks when the Fn button is pressed, and
remains locked until the button is pressed a second
time, the shutter is released, or the exposure meters
turn off.
E
AE lock
(Hold)
*
Exposure locks when the Fn button is pressed, and
remains locked until the button is pressed a second
time or the exposure meters turn off.
F
AF lock only Focus locks while the Fn button is pressed.
s
Flash off
The flash will not fire in photos taken while the Fn
button is pressed.