Nikon D780 DSLR Camera (Body Only) - Manual (Page 325)

279 Other Shooting Options
Other Shooting Options
To choose the role played by the memory card in Slot 2 when
two memory cards are inserted, press the
G button and select
[ Role played by card in Slot 2 ] in the photo shooting menu.
Using Two Memory Cards
Option Description
P [ Overflow ]
The card in Slot 2 is used only when the card
in Slot 1 is full.
Q [ Backup ]
Each picture is recorded twice, once to the
card in Slot 1 and again to the card in Slot 2.
R
[ RAW Slot 1 - JPEG
Slot 2 ]
• The NEF (RAW) copies of photos taken at
settings of NEF (RAW) + JPEG are recorded
only to the card in Slot 1, the JPEG copies
only to the card in Slot 2.
• Pictures taken at other image quality
settings are recorded twice at the same
setting, once to the card in Slot 1 and
again to the card in Slot 2.