Using two memory cards – Nikon D810 User Manual
Page 110
86
When two memory cards are inserted in the camera, you can
choose one as the primary card using the Primary slot
selection item in the shooting menu. Select SD card slot to
designate the card in the SD card slot as the primary card, CF
card slot to choose the CompactFlash card. The roles played by
the primary and secondary cards can be chosen using the
Secondary slot function option in the shooting menu. Choose
from Overflow (the secondary card is used only when the
primary card is full), Backup (each picture is recorded to both
the primary and secondary card), and RAW primary - JPEG
secondary (as for Backup, except that the NEF/RAW copies of
photos recorded at settings of NEF/RAW + JPEG are recorded
only to the primary card and the JPEG copies only to the
secondary card).
Using Two Memory Cards
D
“Backup” and “RAW Primary - JPEG Secondary”
The camera shows the number of exposures remaining on the card
with the least amount of memory. Shutter release will be disabled
when either card is full.
A
Recording Movies
When two memory cards are inserted in the camera, the slot used to
record movies can be selected using the Movie settings >
Destination option in the shooting menu (0 63).