hyalinejim

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Yes, this is a good middle ground for shooting outdoors, especially when it's sunny. If you can see the LCD properly (and if not you can use the EVF) you can decide to raise or lower the temperature depending on the colour of the light and/or aesthetic preference.
That's because the stills use the full height of the sensor in 4:3 aspect ratio. The video clips are a 16:9 crop and so the vignetting is cropped out of the frame.
It's such a small amount of vignetting that it would be easy to manually crop in post for stills. However, if you turn IBIS off for stills it might disappear altogether.

But I could try simply shoot stills in 3:2 format instead of 4:3, because it is cropped enough from top and bottom to eliminate the mild upper corner vignetting.

I would add that from my experience of using a manual focus 58mm Rokkor 1.2 on a 5D3 for photography I found that if I used the optical viewfinder to judge focus, forget it, it was out of focus. I missed it nearly every time.
However, I got an almost 100% success rate by using an LCD viewfinder (remember those?). So you're magnifying the large, high resolution image on the rear LCD screen. It's actually possible to nail focus this way.
 

Well, I have to eat my hat 😳 😂
I did another test and ran each camera on standby using previous settings. GH5 lasted around 1h 50m and GH6 lasted 2h 17m.
Now, the GH5 battery is older and has been through quite a few cycles, whereas GH6 battery is brand new.
So why is everyone saying GH6 battery life is way worse? Aside from the fact that when recording it does eat battery a little bit faster, maybe it's because the GH6 battery is not fully charged until all the lights on the charger go out, and people don't realise that?
BTW, in standby mode GH5 died around 5 minutes after the red flashing indicator, and GH6 was more like 10 minutes.

Well, I have to eat my hat 😳 😂
I did another test and ran each camera on standby using previous settings. GH5 lasted around 1h 50m and GH6 lasted 2h 17m.
Now, the GH5 battery is older and has been through quite a few cycles, whereas GH6 battery is brand new.
So why is everyone saying GH6 battery life is way worse? Aside from the fact that when recording it does eat battery a little bit faster, maybe it's because the GH6 battery is not fully charged until all the lights on the charger go out, and people don't realise that?
BTW, in standby mode GH5 died around 5 minutes after the red flashing indicator, and GH6 was more like 10 minutes.

Why are people moaning about battery life?  I think a huge proportion of camera criticism is emotional, not rational.  Take the GH6 for example, people were comparing the battery life between GH5 and GH6 (perhaps without facts) and are critical of that, but then they compare the DR to something like the P6K and are critical again.  This thread is full of combinations like that. 
Instead, had they compared the DR between the GH5 and GH6 they'd be complimentary, and compared the battery life between GH6 and P6K they'd also be complimentary.
Realistically, you have to compare all aspects of one camera with all aspects of another.  Comparing the DR to camera X and battery life to camera Y implies that I can buy a camera with the DR of camera X and the DR of camera Y, which of course doesn't make any sense.
Anyway, I'm very curious to hear about how the battery life compares.
In terms of how to compare the GH5 vs GH6 battery life on standby, use the timelapse mode on your phone (and have it on charge) and put a clock in the shot.  You only need a rough comparison (if they're within a minute or two of each other then that's good enough) and there's no huge file-sizes to deal with, and no media management - just review it on the phone at the end to see the times they shut down and then delete the clip!

Thanks! It's a lut I made that emulates Portra 400 film as scanned on a minilab scanner (which I've posted about here before). Since negative film has quite a lot of stops above middle grey and only a few under, the highlights are relatively low contrast compared to the shadows.

I would add that from my experience of using a manual focus 58mm Rokkor 1.2 on a 5D3 for photography I found that if I used the optical viewfinder to judge focus, forget it, it was out of focus. I missed it nearly every time.
However, I got an almost 100% success rate by using an LCD viewfinder (remember those?). So you're magnifying the large, high resolution image on the rear LCD screen. It's actually possible to nail focus this way.
 

Yes, it was!
GH5 ran to 1h 44m 56s! (4k 60 8bit 420)
So why are people, myself included, moaning about GH6 battery life? Perhaps the GH6 battery eats battery faster when not recording? I might try a test where both are switched on but not recording and see when each one dies.
That's kind of a drag, though, as I'd have to sit there and watch them... unless I had a third camera that can record forever, which I don't 😂
BTW am I right in saying that on the GH5 you can't use V-Log view assist during playback? As in, it will always be in log? If so, that's another thing I like about the GH6: you can show the client the shot you just took and not have to say "It looks all grey and washed out now, but I'll fix that in the final video, don't worry!"
 

I would add that from my experience of using a manual focus 58mm Rokkor 1.2 on a 5D3 for photography I found that if I used the optical viewfinder to judge focus, forget it, it was out of focus. I missed it nearly every time.
However, I got an almost 100% success rate by using an LCD viewfinder (remember those?). So you're magnifying the large, high resolution image on the rear LCD screen. It's actually possible to nail focus this way.
 

Yes, it was!
GH5 ran to 1h 44m 56s! (4k 60 8bit 420)
So why are people, myself included, moaning about GH6 battery life? Perhaps the GH6 battery eats battery faster when not recording? I might try a test where both are switched on but not recording and see when each one dies.
That's kind of a drag, though, as I'd have to sit there and watch them... unless I had a third camera that can record forever, which I don't 😂
BTW am I right in saying that on the GH5 you can't use V-Log view assist during playback? As in, it will always be in log? If so, that's another thing I like about the GH6: you can show the client the shot you just took and not have to say "It looks all grey and washed out now, but I'll fix that in the final video, don't worry!"
 

Just so we're all on the page: I was testing battery life, not overheating. Of course, the figure doesn't mean anything until it's compared to something else. I'll try to run the same test on a GH5 to compare.
 
Not in Ireland lol! Hottest day of the year so far 😂
 

Just so we're all on the page: I was testing battery life, not overheating. Of course, the figure doesn't mean anything until it's compared to something else. I'll try to run the same test on a GH5 to compare.
 
Not in Ireland lol! Hottest day of the year so far 😂
 

Just so we're all on the page: I was testing battery life, not overheating. Of course, the figure doesn't mean anything until it's compared to something else. I'll try to run the same test on a GH5 to compare.
 
Not in Ireland lol! Hottest day of the year so far 😂
 

Not more than 25C

1h 29m 17s
This is in 4k 60p LongGOP with DR boost.
Static scene exposed at +0, camera on tripod, IBIS off, LCD flipped out with backlight at 0 brightness.

1h 29m 17s
This is in 4k 60p LongGOP with DR boost.
Static scene exposed at +0, camera on tripod, IBIS off, LCD flipped out with backlight at 0 brightness.

That is super clean video, the whites are white, the black print is black...eh well eh... 😵

I've just pressed record!

I can run a test for you if you tell me the parameters you're interesred in. I can run record on a full battery and see how long it lasts.

I can run a test for you if you tell me the parameters you're interesred in. I can run record on a full battery and see how long it lasts.

I can run a test for you if you tell me the parameters you're interesred in. I can run record on a full battery and see how long it lasts.

Well, I made a total liar out of myself and went and bought another Panasonic GH5 with V Log in it. And to make it even more crazy I bought a Canon FD 300mm f2.8 lens, the big white one, with it, and the older 14-140mm Panny lens, the black and gray one.
With the newer firmware updates the GH5 has gotten a lot better than when I had mine before.  Pretty hard camera to beat used even today.  The 300mm ought to be good for birding and well why not. I am going to use it with my EF to M4/3 Speedbooster so will be interesting. So now I will have even more stuff.

I need more time to get a feel for it.
We've just moved back from NZ to Ireland and have been preoccupied with finding a place to live. I mainly shoot video for corporate work that I do, very little for family stuff or for pleasure/creativity. Since we've returned I've done one major job but I used the GH5 as I didn't want any curve balls that the GH6 might throw my way.
So I've really only pressed record on it a handful of times, doing a few tests. From the little I've shot with it, it seems like the battery life is really shit compared to the GH5 and a USB power source will be necessary. I don't use rigs, so I was thinking even just having one in the bag to charge up the last battery when it's been used. That might be enough to get me through a half day shoot.
DR boost gives you an extra stop in the highlights. That's it. So if you think of your average GH5 scene and where it clips, then DR boost will give you one stop more info, at the cost of using heavy NDs in most situations. I've got as far as a 5 stop Tiffen solid ND to stick under my SLR Magic Vari ND II, but am considering the Nisi True Colour to replace the SLR Magic as it probably has less colour cast (which is not so important to me) and possibly slightly less polarisation (which is the real ass kicker with vari NDs, I think).
I've satisfactorily matched the colour from the GH6 and GH5 in V-Log, and the image is thus practically identical for my purposes when not using DR boost. If you set the GH5 to minimum sharpness and noise reduction it's the same as the GH6 in terms of detail/sharpness/artificiality/organicness (except there may be differences in noise which I haven't examined in great detail), so the choice to use one or the other for me now comes down to functionality and ease of use.
I do miss the easy 2x digital zoom for HD like on the GH5 as discussed previously in this thread.
Having said all that, there are a few things that I really like a lot about the GH6:
- Red frame when recording. This is a lifesaver. I've often lost shots from having gotten into the wrong record/stop button pressing cycle
- Punch in while recording to check focus
- Luminance spot meter. This is not for everyone but it's amazingly useful for me as another exposure tool
- Usable AF using Panasonic lenses (anything I've checked on the Speedbooster is hopeless). Maybe once a year I need to do a static shoot of people walking down a corridor towards camera, chatting. The AF will do a better job than I can and give the 2 or 3 seconds of usable footage that I need.
- Confidence that I can shoot in low light if needed. Previously I've never needed more than 3200 ISO (most shots are on a Tamron 24-70 2.8, which is f1.8 on a Metabones XL) but that was a bit noisy on the GH5 and on the GH6 with DR boost it's much cleaner.
Ha ha! Here are some more negatives though:
- The build quality doesn't feel as good as the GH5.
- Some YouTuber was complaining about the silly mechanism on the memory card door and I agree with him. There was nothing wrong with the door on the GH5, but the GH6 is now finicky to open.
- The stupid light streaking thing which I have seen, when I deliberately tried to recreate it.
- The whole DR boost thing is voodoo. I've got noisy results in daylight using it, which worries me. I need more tests to suss this one out.
And finally, here are some mildly shocking things I've learned when comparing to the GH5:
- GH6 is slightly wider angle of view
- GH6 gives slightly darker image
- There is quite probably an overall colour cast imbalance. Almost certainly when using the same WB preset or when dialling in degrees Kelvin, and possibly also even when doing a custom WB on the same target. Need to test this more. It might just be the difference between my two units.
Honestly, if you have a GH5 there is no huge reason to upgrade unless you definitely need the higher resolution, codec or frame rate specs. The output is going to look pretty much the same. It's not like the jump from the GH4 to the GH5, which added 10 bit and made V-Log usable. More like the GH5 to the GH5 II - a better camera to use but your client/audience won't see anything diferent.

I'm going to be able to play around with one in a few weeks but overall I'm pretty underwhelmed from what I've seen and heard. I know people who absolutely love it, but when really looking at it a lot of the things that I'd want are actually in the GH5II. 4K 120p would be nice, but I don't need it, especially since I've gotten really good results from using Topaz Video Enhance AI to upscale 1080p 120fps. ProRes is nice, but it'd be nice to have ProRes LT because 95% of the time I don't need HQ or even standard ProRes. The better stabilization, low light, audio controls, etc. are all very welcome but again they're not something I NEED.
There's really just not a ton of reasons why I'd need to upgrade from the GH5 short of my GH5 dying, but even then I think I'd probably just buy a used GH5 or another used S5 before considering a GH6. That I'd have to rig a GH6 up with an external battery solution doesn't help its case. Maybe the battery life of the GH3, GH4, and GH5 spoiled me, but as an event shooter that likes to work as light as possible, it's a real bummer that the battery life is so poor.