Nikon D780 Reference Manual page 90

D
The Count Down Display
A count down will appear in the top left corner of the display
approximately 30 s before live view ends automatically.
•
If the timer has been triggered by Custom Setting c4 [Monitor off
delay], the count down will be displayed in black starting 30 s before
the timer expires, switching to red when there are only 5 s to go. If [No
limit] is selected for [Monitor off delay] > [Live view], the camera may
nevertheless terminate live view as necessary to protect its internal
circuits from high temperatures and the like.
•
A count down will be displayed in red starting 30 s before the camera
shuts down to protect its internal circuits. Depending on shooting
conditions, the timer may appear immediately when live view is
selected.
A
Exposure Preview (Lv)
When [On] is selected for Custom Setting d9 [Exposure preview (Lv)],
exposure can be previewed in the monitor during live view photography.
You may find this useful when using exposure compensation or shooting
in mode M.
A
Touch Controls
Touch controls can be used in place of the shutter-release button to focus
and take pictures during live view photography ( 0 14).
Basic Photography and Playback
44