Panasonic LUMIX DC-GH6 Owner's Manual page 133

Recording Videos – [System Frequency]
•
After changing the setting, turn the camera off and on.
•
If you record using a system frequency that differs from the broadcasting system
of your region, it may not be possible for you to properly play back videos on your
TV.
We recommend using the setting as it was at the time of purchase if you are
unsure about broadcasting systems or if you will not be involved in producing
cinema film.
•
After changing the setting, it is recommended to insert another card and format it
with this camera.
– Make the [System Frequency] setting the same for when you are recording and
playing back.
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