Panasonic LUMIX DC-GH6

Video Settings – Main Assist Functions
408
[Zebra Pattern]
Parts that are brighter than the base value are displayed with stripes.
You can also set the base value and the breadth of the range so that the
stripes are displayed on parts that are within the range of brightness you
specify.
[ZEBRA1]
[ZEBRA2]
[ZEBRA1+2]