Panasonic LUMIX DC-GH6 Owner's Manual page 444

Special Video Recording – [Synchro Scan]
4
Set the shutter speed.
≥Rotate
or
•
You can call up the current shutter speed for normal recording by pressing
[DISP.].
•
Adjust the shutter speed while looking at the screen so that flickering and
horizontal stripes will be minimized.
•
When you set [Synchro Scan] to [ON], the available shutter speed range
becomes narrower.
, or
.
60.1 60.1
to select a numeric value, then press
444