Nikon Z8 User Manual page 801

Auto Temperature Cutout
The level at which the camera will turn off automatically as its internal temperature rises can be
selected from [Standard] and [High].
When [Standard] is selected, the camera will display first a J and
then a K icon as its internal temperature rises, switching to a
count-down timer if the temperature increases still further.
When [High] is selected, the camera will display J, K, and M
icons as its internal temperature rises, switching to a count-down
timer if the temperature increases still further.
When the count-down timer reaches zero, the camera will turn
off automatically and further photography will be suspended.
D
Caution: "High"
Although selecting [High] gives you more time before the camera shuts down, the camera may
become hot to the touch. We recommend using a tripod or other equipment to reduce the time spent
touching the camera.
D
Cautions: When the Camera Is Hot
In some cases, the count-down timer may be displayed the moment the camera is turned on, even
when [High] is selected.
Image quality may drop when the camera is hot.
Memory cards inserted in a hot camera may also become hot. Wait for the temperature to drop
before handling the camera or memory cards.
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G button U B setup menu
Auto Temperature Cutout