Nikon D810 Product Manual - Page 110

Using Two Memory Cards 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). 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). 86