A10: Vertical Af-On Button - Nikon D3X User Manual

a10: Vertical AF-ON Button

Choose the function assigned to the B
button for vertical shooting.
Option
G Same as AF-ON
AF-ON
A
(default)
B AE/AF lock
C AE lock only
AE lock (Reset
D
on release)
E AE lock (Hold)
F AF lock only
Both B buttons perform the function selected
for Custom Setting a9.
Pressing the vertical B button initiates
autofocus.
Focus and exposure lock while the vertical B
button is pressed.
Exposure locks while the vertical B button is
pressed.
Exposure locks when the vertical B button is
pressed, and remains locked until the button is
pressed a second time, the shutter is released, or
the exposure meters turn off.
Exposure locks when the vertical B button is
pressed, and remains locked until the button is
pressed a second time or the exposure meters
turn off.
Focus locks while the vertical B button is
pressed.
Description
U
313