Nikon Z 7 Reference Manual page 225

7
Choose the first exposure.
To choose the first exposure from
existing photos taken with Large
selected for Image size > NEF (RAW)
in the photo shooting menu,
highlight Select first exposure (NEF)
and press 2. Use the multi selector to highlight the desired
image and press J to select (to view the highlighted image
full screen, press and hold the X button).
8
Frame a photograph, focus, and
shoot.
Continue shooting until all
exposures have been taken and the
final photograph has been recorded
(if you selected an existing NEF
(RAW) image as the first exposure in
Step 7, shooting will start from the
second exposure). If On (single
photo) was selected in Step 2,
multiple exposure shooting will end when the photo is
recorded; otherwise, you can continue taking multiple
exposures until multiple exposure shooting is turned off.
Menu Guide > C The Photo Shooting Menu
201