Panasonic Lumix S5 Mirrorless Camera - Manual (Page 239)

9. Flash
239
™
[Wireless FP]
The external flash performs FP firing (repeated high-speed firing of the
flash) during wireless recording, enabling recording using the Flash even
at fast shutter speeds.
¨ [ ] ¨ [ ] ¨ Select [Wireless FP]
Settings: [ON]/[OFF]
™
[Communication Light]
Set the strength of communication light.
¨ [ ] ¨ [ ] ¨ Select [Communication Light]
Settings: [HIGH]/[STANDARD]/[LOW]