They said in an interview they improved low light and FPN. My guess is it will be comparable/slightly better than the BMCC. I think it will be a really good image at ISO 1600, maybe 3200. No black sun is really cool.
It's 800, ISO range of 200-1600 right now. Also, no black sun image.
I bought a 180 varavon battery pack which is compact and powers it for 6 hours, and a 385 dollar OLPF which gets rid of aliasing and just makes the overall image a lot smoother and nicer. GH4 is way better for some shoots, I really like it on run and gun stuff, red carpets, behind the scenes, documentary, travel trips. But anything setup with time for lighting and a bunch of takes (commercials, music videos, short films, feature) I'd EASILY choose the pocket.
I have it and overall I really like it, hoping to do a video review soon, but if you have any questions about the f & v let me know and I'd be happy to answer them
You've got to be decent to really make the pocket sing. I'd recommend getting the speedbooster.
IMO Pros of Pocket over GH4 Better colors, more cinematic image, better dynamic range (.5 stops with prores, 2 stops with raw), better lowlight (with speedbooster), and just a more pleasing overall feel
Pros of GH4: Slow mo, longer battery life, 4k, slightly better rolling shutter (in 1080, worse when recording in 4k) better moire and aliasing (pocket is fairly well controlled though) better for run and gun, quick turn around.
You could also look into the BMPC, you can get it for 2750 and comes with davinci resolve, the global shutter is really nice, it renders motion so well, has an ever so slightly higher dynamic range than GH4 in raw, and has 4k, and no issues with moire aliasing.
Sadly no slow mo.
I also love that when a new camera is released we see 12,000 videos of slow pans of lakes and beaches and deserts but very few well made amazingly written films shot with the camera.