Just got a Lumix DMC-S5 and I am happy with the camera.
I have some software that I use for a couple of other Sony cameras which automatically downloads all photos and deletes them from the card. The new Lumix shows up as a removable disk in the same way as my other Sonys so I had hoped to use the same process for downloading.
However, I get an error that the media is write protected (I get the same even in Windows Explorer). I have checked that the card isn't protected and I'm able to delete photos (and format the card) from the camera. Is this the way all Lumix cameras operate??
I can work around this by manually deleting all images on the camera after each download. I'd rather avoid this extra step though.