Nikon Z8 User Manual page 663

Option
[Pre-release burst]
[Post-release burst]
A Y icon appears in the shooting display when an option other
than [None] is selected for [Pre-release burst]. While the shutter-
release button is pressed halfway, a green dot (I) will appear in the
icon to show that buffering is in progress.
If the shutter-release button is pressed halfway for more than
about 30 seconds, C will appear in the icon and Pre-Release
Capture will be cancelled. Pre-Release Capture can be resumed
by lifting your finger from the shutter-release button and then
pressing it halfway again.
If an option other than [None] is selected, the camera will buffer frames
while the shutter-release button is pressed halfway, but only the frames
added to the buffer in the final n seconds, where n is the value selected
for [Pre-release burst], will be recorded to the memory card when the
shutter-release button is pressed all the way down ("Pre-Release Capture").
If the interval between the shutter-release button being pressed halfway
and its being pressed all the way down is shorter than the time selected,
only the frames saved to the buffer while the button was pressed halfway
will be recorded.
Choose the maximum length of time the camera will continue to take
pictures after the shutter-release button is pressed all the way down: [1 s],
[2 s], [3 s], or [Max.]. Shooting can continue for up to about 4 s when [Max.]
is selected.
Description
589
d3: Pre-Release Capture Options