GH4 experiences
I have used the GH4 for 2 years, before that Canon XHA1, XA20, Sony EX1, 60D, 5D2, 5D3, GH3, Blackmagic Pocket, Blackmagic 4K.
Occasionally i use Ninja2 external recorder
Setting I use: Video Cinelike with sat, Sharpness, Contrast set to -3
Strongly recommend cold light...