Using two memory cards – Nikon D300s User Manual
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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
CF card slot to designate the
card in the CompactFlash card slot as the primary card,
SD card
slot to choose the SD memory 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).
A
“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.