Secondary Slot Function - Nikon Z 8 Reference Manual

Secondary Slot Function

Choose the role played by the card in the secondary slot when two memory cards are inserted in the
camera.
Option
[Overflow]
P
[Backup]
Q
[RAW primary
- JPEG
R
secondary]
[JPEG primary
- JPEG
O
secondary]
[RAW primary
- HEIF
a
secondary]
The card in the secondary slot is used only when the card in the primary
slot is full.
Each picture is recorded twice, once to the card in the primary slot and
again to the card in the secondary slot.
This option is available when [SDR] is selected for tone mode.
NEF (RAW) copies of photos taken at settings of RAW + JPEG/HEIF are
recorded only to the card in the primary slot, JPEG copies only to the
card in the secondary slot.
Pictures taken at other image quality settings are recorded twice at the
same setting, once to the card in the primary slot and again to the card
in the secondary slot.
This option is available when [SDR] is selected for tone mode.
Two JPEG copies are recorded, one to each memory card.
The copy saved to the card in the primary slot is recorded at the image
quality and size selected in the photo shooting menu. The copy saved
to the card in the secondary slot is saved at an image quality of [JPEG/
HEIF basic] and a size of either [Medium] or [Small]. The size can
be selected by pressing 2 when [JPEG primary - JPEG secondary] is
highlighted.
At image qualities of RAW or RAW + JPEG/HEIF, this option is equivalent
to [Backup].
This option is available when [HLG] is selected for tone mode.
NEF (RAW) copies of photos taken at settings of RAW + JPEG/HEIF are
recorded only to the card in the primary slot, HEIF copies only to the
card in the secondary slot.
Pictures taken at other image quality settings are recorded twice at the
same setting, once to the card in the primary slot and again to the card
in the secondary slot.
G button U C photo shooting menu
Description
429
Secondary Slot Function