Nikon Zfc Mirrorless Camera with 28mm Lens - Manual (Page 390)

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Custom Settings: Fine-tuning camera settings
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Highlight display threshold
Choose the brightness needed to trigger the video highlight display.
The lower the value, the greater the range of brightnesses that will be
shown as highlights. If [255] is selected, the highlight display will show
only areas that are potentially overexposed.
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Highlight display
If both the highlight display and focus peaking are enabled, only focus
peaking will be displayed in manual focus mode. To view the highlight
display in manual focus mode, select [Off] for Custom Setting d9 [Focus
peaking] > [Peaking level].