Thanks @aaronchicago, I agree, even at 8bits with all the problems we all Known (banding, blocking, noise etc) it's better than any other profile in terms of color and skin tones, (please excuse my bad english)

@alexauwa I guess it depends on what you mean by low light. If you're wanting to use natural light in a dark setting where the blacks needs to be raised up in order to see detail then no it's not very good in that situation. It does work great though in low light if you're providing enough light on a subject or piece of the frame. I find it almost necessary to use a LUT preview while shooting V Log to get the best exposure, for now at least. Maybe with more hours of use I'll get the hang of it sans LUT preview.

EDIT: Below is a frame where the room was dark except for a 650 watt fresnel light shining through a window.

@Vitaliy_Keselv Great news! Do you know what the firmware update could bring us? How about RAW video so we can grab and "fix it in post" more effectively? Time is at a premium with high end actors, so RAW can save us a lot of money simply by allowing us to worry about the settings less... Unless I am doing this totally wrong!

A new major GH4 firmware upgrade..

...Like showing focus box in 4k photo or adding color choices to peaking :)

GH5 must come this year. There was a working prototype few months ago. Or maybe they are changing design and adding new features like 4k 60P 10bit HEVC with some new chip.

I would be still very happy if they add some useful things to GH4. Maybe then it is easier to wait GH5 a bit longer.

My wishlist for the firmware upgrade:

1. Improved reliability. I had a great take spoiled by the sudden appearance of weird rainbow-like bands appearing for half a second, Looked like someone'd waved a magnet on an old-style TV screen.

2. More Vlog options-- say, letting us see the image with more vivid colors while shooting.

3. I'd love 60fps in 4k.

4. Recording 10-bit video to the internal card. Not sure why this is a problem, considering the speed and capacity of the cards coming out these days.

(Improved low-light performance'd be great, but that might be remedied by using higher ISOs and Neat Video.)

@hedrox LUT preview would be great for the GH4 + VLog. That's something that seems realistic unlike 4K 60fps, or 10 bit internal.

Looks to me that Sony's A6300 is going to put some pressure on the GH4/GH5 line. Personally, I'd recommend the Sony over the GH4 to my friends right now.

As for Sony and their colour science, well, it is somewhat undesirable... I say that hesitantly because I come from the Sony FS700 shooting RAW... As for their consumer cameras, their HDMI port only outputs 8-bit colour, not very good at colour grading...which you need to do to that lovely 14+ Stops DR SLog3 footage...

For those that go off of spec, yes, Sony is leading the pack for sure. However, if you need to make money from your art, you may be better served from another manufacturer that cares less about spec wars, and more about colour art... Yes, a hail-storm of furious comments may be imminent here, but remember, I do like Sony for their spec! Specs makes money too! LOL... What a controversy!

If the GH5 offers better noise levels, RAW video output and 4K 6G SDI, some nice F/2.8 10X parfocal power zooms as the kit lens, some kick-a$$ AF, some better preamps, top-notch artistic colour renderings, UHS-ii SD slots X2, modular add-ons like the YAGH, slow-motion with less compression, the whole package, I would hands down drop $2000-$6000 for that camera, depending on the kit!

Am I asking too much? Likely! :)

Personally to stay competitive they have to stay away from cropping the m4/3 sensors for video. M4/3 is a reasonable compromise IMO if they don't don't crop it for 4K, IBIS or whatever. Of course a multi aspect sensor would also be a help there. I also think it's time to drop creditable rumors on the GH5 before to much of their market looks to the likes of Sony. At least I hope they have something worth rumoring about in the wings : )

If you want to see what the GH4 is capable of producing in 4K VLog 10-bit 422 using the Odyssey 7Q+, have a look at the video at the BOTTOM of this page: http://www.studiocastone.com/projects/

I am not 100% satisfied with the video, but it was shot with NO budget, shot it for a charity school, had a bunch of kids making the story... I shot it in about 2 hours with almost no help, mostly one man run/gun/direct, all natural lights except a couple of scenes, in totally awful filming conditions, -15 degrees Celsius outside!!!

You can totally tell the film needs tons of work, but hey, I was impressed with the video quality... No noise reduction at all... I edited it mostly at midnight, so yes, it sucks, but not bad for the circumstances...

Only used 2 Osiris LUTs for the whole colour change for VLog to REC709... No time was allowed for manual colour grading... :(

Thoughts on the colours in the video? Camera work? Any comments on it? Good? Bad? "Next time do..."? Be brutally honest! No feelings hurt here!

Cheers, Brennan K.

I do believe the GH4 has "punch focus" already... Is the button above (and slightly left of) the main rotating rocker switch not for that purpose? Or is it just mine?

@Celullo

There is single focus (AFS) during recording. You can use it by half pressing shutter (faster focus) or with touch focus (slower focus shift). Also there is loop recording (pre-recording) with 4k photo.