Nikon Z8 User Manual page 507

Tone Mode
The camera offers a choice of two tone modes: [SDR] and [HLG].
Option
This mode supports a normal range of brightnesses (dynamic range). Pictures taken while
[SDR]
this option is selected are stored in JPEG format (extension "*.JPG").
This mode supports HDR (high dynamic range). Pictures taken while this option is
selected are stored in HEIF format (extension "*.HIF"). It has a wider dynamic range than
SDR.
"HLG" appears in the shooting display when this option is selected.
[HLG]
For optimal color reproduction when viewing HLG pictures, use monitors, computers,
operating systems, applications, and other equipment compatible with HLG. For more
information, visit the following website:
https://onlinemanual.nikonimglib.com/notice/hlg_setting_guide/en/
D
Taking Photos in HLG
Pictures taken with [HLG] selected for tone mode exhibit more "noise" (in the form of randomly-
spaced bright pixels, fog, and lines) than do pictures taken using [SDR].
The lowest value available for the [ISO sensitivity settings] > [Maximum sensitivity] item in the
photo shooting menu is ISO 800.
ISO sensitivities of Hi 0.3 through Hi 2.0 are not available.
The video file type for time-lapse videos is fixed at [H.265 10-bit (MOV)].
[Color space] in the photo shooting menu is fixed at "BT.2100".
[Active D-Lighting], [Multiple exposure], and [HDR overlay] are not available in the photo
shooting menu.
[C30], [C60], and [C120] cannot be selected for release mode and Custom Setting d3 [Pre-Release
Capture options] is not available.
G button U C photo shooting menu
Description
433
Tone Mode