@Matthew Here's a screen grab from a test I did yesterday. I wondered the same thing. CINE D flattened a bit with High/Shad curves flattened to their max. Results aren't good. (Poor WB setting but you get the idea.) See attached.

If just occurred to me... Sorry for all the screen grabs vs. video. They're are just too many perimeters that I'm testing before actually creating something that "moves." Time lapse shot in 4K, rendered out to 1080p.

Exposed for the sky. Even with You Tube's compression - continuous tones look good with low noise.

@EliasD - you can't do custom naming in-camera. I rename my files when I back them up using one of the free file naming utilities out there, and make further backups from the newly named files (the free app I use is filerenamer basic)

Hey guys, just got mine! any ideas how to set a custom name at mov files? or how to remove from lcd display the 3 icons at right during shooting?

@Xenocide38 I couldn't agree more. At first I thought 4K would be "bonus" to have just incase I needed it. But the results I'm getting from 4K are pretty amazing in post. Especially 4K rendered out as 1080p. The noise is smaller. Gradients have less or no banding. With CINE D (my setting of choice) caucasian skin tones are such an improvement coming from color profiles of the GH3. No more of that "pink, plastic" color rendition. CINE V is rich, vibrant and flat out sexy - IF that's the style you're looking for. That said, CINE V @ 4K still does retain much more information in post than I expected. Blacks my appear slightly crushed.... but they're not. Nice. Screen grabs of CINE V attached. These are straight out of the camera - no color correction.

Even without down-converting/transcoding into 1080p 4:2:2, the 4K files have more color info to play with.

Sure 4:2:2 or 4:4:4 or even raw are better but the extra resolution of 4K means more color information from pixel to pixel. 4K 4:2:0 grades much nicer than 4:2:0 1080p. Those extra pixels also help for stabilizing and sharpening. 4K, while not everything, does offer more than some people give it credit.

@tinbeo Premiere's "auto scale" doesn't bring down the resolution of 4K when auto sizing to a 1080 sequence. It just makes it "fit" within the 1080 sequence I believe. You are compressing twice the information (4K) into a 1080 edit. This allows you the ability zoom and/or crop in (roughly up to 200%) on the 4K footage or clip without loosing anything in a true 1080p HD edit. Hope that made sense and answered your question.

Great Comparison of the GH3 and GH4 highlighting the GH4's new features and benefits. By Griffin Hammond.

Does changing highlight/shadow curve actually expand the DR range? Or it more of a post-adjustment that the camera applies after the footage has been captured?

@AdamT Ditto that.

FYI: In Premiere Pro - if you right click on the footage in the bin and "reinterpret" the 60p footage to 23.97 BEFORE you drop it in the timeline - you get outstanding slow motion.

Color Profile test from @Magnus13

@maddog15 I just did some 1080p tests in both 200mbs ALL-I and 100mbs, and the 100mbs shots actually grade a lot better! Not sure why it's operating this way. I'm using a panasonic USH-1 card - could it be that the 200/ALL-I only operates on those USH-3 cards?

Or is 200/ALL-I just a complete gimmick based on bitrate theory, but actually degrades image quality?

@fredfred27 Yep, I see your point. Regardless, I certainly wish the VFR modes weren't so "Canon MkIII" in detail.

@nopacnone Yeah, that's a good analogy. Uprezzed 720. Also I agree with the 4K compression. And you can't beat the space savings of IPB Long GOP apparently even in 4K! It's looking more like I'll be shooting most everything in 4K and then editing in 1080. When needed, I'll switch to shooting in 1080 60p if I want great slo mo shots reinterpreted to 23.97 in Premiere Pro. Otherwise it's 4K shooting and editing.... for now.

Bit Rates: To this day I absolutely love the way my GH2 shoots with Driftwood's Moon T5/T7 (All-Intra @ 158Mbs). As far as the 200Mbs mode on the GH4 I'm a bit taken aback. Though it's early in my testing - the noise level seems a bit crunchy/staticy vs smooth and creamy. I'm becoming a Long GOP IPB fan on the GH4 as the 100Mbs modes are quite wonderful in 1080 as well as 4K/C4K. Drew at the DREWnetwork - who's opinion i respect and have learned much from - has stood by "IPB Traditional Long GOP Inter-Frame" even through the high bit rate, GH2 hack days.