C: Timers/Ae Lock; C1: Shutter-Release Button Ae-L; C2: Standby Timer - Nikon D780 Reference Manual

c: Timers/AE Lock

c1: Shutter-Release Button AE-L

Choose whether exposure locks when the shutter-release
button is pressed.
Option
O [On (half press)]
[On (burst
P
mode)]
[Off]

c2: Standby Timer

The camera continues to meter exposure for a set time after the
shutter-release button is pressed halfway. Choose how long the
camera continues to meter exposure when no operations are
performed.
•
The shutter-speed and aperture displays in the control panel
and viewfinder turn off automatically when the standby timer
expires.
G button U A Custom Settings menu
Pressing the shutter-release button halfway
locks exposure.
Exposure only locks while the shutter-release
button is pressed all the way down.
Pressing the shutter-release button does not
lock exposure.
G button U A Custom Settings menu
Menu Guide > A Custom Settings
Description
605