Reference Manual

315
C
The Photo Shooting Menu: Shooting Options
8
Start shooting.
Take the selected number of shots.
If you used [Select first exposure
(NEF)] to select an existing NEF
(RAW) image as the first exposure in Step 7, shooting will
start from the second exposure.
Once you have taken the selected number of shots, the
pictures will be overlaid to create a multiple exposure.
Multiple exposures are recorded in JPEG format regardless
of the option selected for image quality.
If [On (series)] is selected for [Multiple exposure mode],
you can continue to take additional multiple exposures
until [Off] is selected.
If [On (single photo)] is selected,
the camera will exit multiple
exposure mode once the number
of shots selected in Step 3 has been
taken.