Nikon Z 8 Reference Manual page 102

Option
[JPEG/HEIF finem]
[JPEG/HEIF fine]
[JPEG/HEIF normalm]
[JPEG/HEIF normal]
[JPEG/HEIF basicm]
[JPEG/HEIF basic]
Tip: NEF (RAW)
NEF (RAW) files have the extension "*.nef".
The process of converting NEF (RAW) pictures to other highly-portable formats such as JPEG is
referred to as "NEF (RAW) processing". During this process, Picture Controls and settings such as
exposure compensation and white balance can be freely adjusted.
The RAW data themselves are unaffected by NEF (RAW) processing and their quality will remain
intact even if the pictures are processed multiple times at different settings.
NEF (RAW) processing can be performed using [Retouch] > [RAW processing (current picture)] or
[RAW processing (multiple pictures)] in the playback i menu or on a computer using Nikon's NX
Studio software. NX Studio is available free-of-charge from the Nikon Download Center.
Tip: "NEF (RAW) + JPEG/HEIF"
If [RAW primary - JPEG secondary] or [RAW primary - HEIF secondary] is selected for [Secondary
slot function] in the photo shooting menu, the NEF (RAW) copies will be recorded to the card in the
primary slot and the JPEG or HEIF copies to the card in the secondary slot (
Record photos in JPEG or HEIF format. "Fine" produces higher
quality pictures than "normal" and "normal" higher quality
pictures than "basic".
Photos are recorded in JPEG format when [SDR] is selected for
[Tone mode] in the photo shooting menu. Photos are recorded
in HEIF when [HLG] is selected for [Tone mode] in the photo
shooting menu.
Choose options with a star ("m") to maximize image quality.
Choose options without a star ("m") to ensure that the files are
more or less the same size.
102
Description
0 429).
Image Recording Options (Image Area, Quality,
and Size)