Nikon D780 DSLR Camera (Body Only) - Manual (Page 676)

630 Menu Guide > A Custom Settings
• The following options are available:
Option Description
A [ AF-ON ]
Pressing the control initiates autofocus,
duplicating the function of the
AF-ON button.
F [ AF lock only ] Focus locks while the control is pressed.
E
[ AE lock
(Hold) ]
Exposure locks when the control is pressed.
Exposure lock does not end when the shutter
is released. Exposure remains locked until the
control is pressed a second time or the standby
timer expires.
D
[ AE lock
(Reset on
release)
]
Exposure locks when the control is pressed.
Exposure remains locked until the control is
pressed a second time, the shutter is released,
or the standby timer expires.
C [ AE lock only ] Exposure locks while the control is pressed.
B [ AE/AF lock ]
Focus and exposure lock while the control is
pressed.
r [ FV lock ]
Press the control to lock flash value for
optional flash units; press again to cancel FV
lock.