[Flash Synchro] - Panasonic LUMIX DC-GH5M2GN Operating Instructions Manual

9. Flash – Setting Flash

[Flash Synchro]

When a moving subject is recorded at night using a slow shutter and flash,
a trail of light may appear in front of the subject.
If you set [Flash Synchro] to [2ND], you can take a dynamic picture with a
trail of light appearing behind the subject by firing the flash immediately
before the shutter closes.
1
 [
[1ST]
This is the normal method for recording with the Flash.
[2ND]
The light source appears behind the subject and the picture becomes dynamic.
]  [ ]  Select [Flash Synchro]
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