Nikon Z 9 Reference Manual page 535

D
Cautions: Multiple Exposure
•
If you use the menus or view pictures in the display while shooting a
multiple exposure, remember that shooting will end and the multiple
exposure will be recorded if no operations are performed for about 40
seconds (or in the case of menus, about 90 seconds). The time available to
record the next exposure can be extended by choosing longer times for
Custom Setting c3 [Power off delay] > [Playback] or [Menus].
•
Multiple exposures may be affected by "noise" in the form of randomly-
spaced bright pixels, fog, or lines.
•
In continuous shooting modes, the camera records all exposures in a single
burst. If [On (single photo)] is selected, multiple exposure shooting will
end after the first multiple exposure is recorded. If [On (series)] is selected,
an additional multiple exposure will be recorded each time the shutter-
release button is pressed.
•
In self-timer mode, the interval between each shot in the exposure is
selected using Custom Setting c2 [Self-timer] > [Interval between shots].
Regardless of the value selected for the c2 [Number of shots] option,
shooting will however end after the number of shots selected for the
multiple exposure.
•
Multiple exposures may end if settings are changed while shooting is in
progress.
•
Shooting settings and photo info for multiple exposure photographs are
those for the first exposure.
•
Do not remove or replace the memory card while a multiple exposure is in
progress.
•
Memory cards cannot be formatted while a multiple exposure is in
progress. Some menu items will be grayed out and unavailable.
C The Photo Shooting Menu: Shooting Options
535