I agree with Chris, except in a lot of ways I think the Panasonic is a great video camera that shoots good stills.
No it doesn't have dual channel xlr inputs, doesn't have the perfect form factor, could use better image stabilization (see Olympus OMD for this).
But . . . compared to the Sony FS100 (which costs 4 times as much) it shoots a better file, focuses as well (with some practice) shoots a good still, and can do more than most photographers need.
Again, though just when I thought the GH3 was all I could need (and I really thought that at first) yesterday we we're shooting with our two RED1's and one Scarlet plus the gh3 for hand held and atmosphere images.
The Scarlet went nuts with it's fan running at full blast (kind of crazy it does this) and was wrecking the sound so I pulled the Scarlet and added a GH3 in it's place.
When I looked at the files from the GH3 compared to the R1's, the difference is not 10, 20, or 30 % it's like 100%. The R1's are just amazing and it's not file size, it's just the overall look of dr, file, pretty noise etc.
Where the GH3 looks smooth and has ok DR, the R1's look like cinema film.
Now, if Panasonic wants to flip the world on it's ear, get away from the 4k craze and just add xlr inputs, better stabilization, dual to quad channel sound and some better faster primes that have I.S.
Also for slow motion make sure the sound works (because even if you can't sync sound on a slow mo, that doesn't mean you don't need the foly sound for later.
I look at the GH3's like a 16mm film camera, the R1's as 35mm film camera.
Both have a place.
The Scarlet? If anybody wants to buy one, give me a call.