GH5 no Auto focus in MP4 LPCM 4k 8bit 25fps mode?

[Chooboo]

Hi Guys, 

Got my Panasonic GH5 and im very happy with it but came across this quirk the other day. When setting it to MP4 LPCM mode and selecting 8Bit 4K at 25fps (PAL) for some reason the camera goes into MF mode only? I can't select AFC or AFS/AFF even when using the focus lever just stays if MF mode. Is this something that can be turned off? or just a feature of the camera? 

At first I thought it was a 4K thing whereby the camera couldn't handle it but when switching to 10bit 4K is seems to enabled just fine?!?! 

I dont know if im missing something or if its a qurik of the system of the camera is broken? 

Any light on the subject would be most welcome, or would be good to compare notes with other GH5 users. 

many thanks

Chooboo

[Chooboo]

 UPDATE:: Solved my own problem, for some reason it forces MF on certain video codec setups when variable framerate option is selected in the menu even when you are at the stock FPS, how bizarre, but there we go, mystery solved ;-) 

[Orangenz]

18 hours ago, Chooboo said:

Hi Guys, 

Got my Panasonic GH5 and im very happy with it but came across this quirk the other day. When setting it to MP4 LPCM mode and selecting 8Bit 4K at 25fps (PAL) for some reason the camera goes into MF mode only? I can't select AFC or AFS/AFF even when using the focus lever just stays if MF mode. Is this something that can be turned off? or just a feature of the camera? 

At first I thought it was a 4K thing whereby the camera couldn't handle it but when switching to 10bit 4K is seems to enabled just fine?!?! 

I dont know if im missing something or if its a qurik of the system of the camera is broken? 

Any light on the subject would be most welcome, or would be good to compare notes with other GH5 users. 

many thanks

Chooboo

Does your lens have a MF switch?