Mine gives beautiful images but it feels flimsy compared to my old Canon T2i cams.
Also has a very flimsy HDMI port that will fail under a lot of use, I'm having to send mine in for service soon.
But again, the GH4 is very versatile, I've been using nothing but old Canon FD mount lenses (some Tokina too) and the shots look great.
Film_autre is correct, but the settings are very easy to put in and what you get back is even nicer than a Canon with Magic Lantern.