Nikon D780 DSLR Camera (Body Only) - Manual (Page 229)

183 Shooting Settings
Self-Timer Mode ( E )
The self-timer can be used to reduce camera shake or for self-
portraits.
1
Select self-timer mode.
Press the release mode dial lock
release and turn the release mode
dial to
E .
2
Frame the photograph and
focus.
The timer will not start if the camera
is unable to focus with
AF-S selected
for AF mode or in other situations in which the shutter
cannot be released.