Fn buttons, Fn button (fn1), Fn button (fn2) – Panasonic Lumix S5 Mirrorless Camera User Manual
Page 321: Recording, use the fn button, Fn button default settings

13. Camera Customization
321
You can register functions to the Fn (Function) buttons. Additionally, you
can register other functions to specialized buttons such as [WB] button, in
the same way as with the Fn buttons.
Different functions can be set for both during recording and playback.
Fn Button Default Settings
Fn Buttons
Fn buttons
[Setting in REC mode]
[Setting in PLAY mode]
1
[Fn2]
[Preview]
[No Setting]
2
[WB]
[White Balance]
[No Setting]
3
[ISO]
[Sensitivity]
[No Setting]
4
[
]
[Exposure Comp.]
[No Setting]
5
Video rec.
button
[Video Record]
[Video Record]
6
[LVF]
[LVF/Monitor Switch]
[LVF/Monitor Switch]
7
[
]
[AF Mode]
[Card Slot Change]
8
[AF ON]
[AF-ON]
[Rating
¿
3]
9
[Q]
[Q.MENU]
[Send Image (Smartphone)]
10
[Fn1]/[
]/[
]
[Level Gauge]
0
Cannot be used as Fn
buttons during playback.
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6
8
5
7
10
9