Beritar

Interesting about the sensors (perhaps?) not being Sony - it makes sense though if they developed the dual-gain architecture as a custom design, which I am assuming they did.
It also then follows that the colour science would be slightly different too.  I suppose they could have made it identical if they'd wanted, but I think if you were designing such a thing you'd constantly be tinkering with it, trying to improve, adapting to more recent tastes etc.
The fact that the G9ii is as good as the GH6 in many ways could be a promising sign for what a potential GH7 could bring.  I think the difficulties with the GH6 were unfortunate, as was that it was overshadowed by the PDAF implementations of the next releases.  I think that Panasonic were being bold and trying to really push forward in doing a dual-gain architecture sensor, but unfortunately it just didn't quite make the kind of difference that you'd hope from such a bold move.  I guess Panasonic might take the "lesson" to just go back to incrementalism and play it safe etc, but I really hope they don't do that, but instead view it as a good-but-not-great project and keep being bold and trying things.
If the GH6 and G9ii sensors are from TowerJazz (or any other non-Sony provider) then it might be a sign they're going out on their own and will continue to iterate on the design and improve it over time.  That would be a great outcome I think.

Hard to say because I already sold the GH6. However, like the S5 and S5II, the G9II and GH6's colors are slightly different.

But honestly the G9II's colors are really good, the best I've seen (with the GH6) from a Panasonic camera.
From what I've read, the sensors inside these two M43 cameras come from TowerJazz, as opposed to Sony with the GH5/G9/S5II/S5/S1H/S1. 

Hard to say because I already sold the GH6. However, like the S5 and S5II, the G9II and GH6's colors are slightly different.

But honestly the G9II's colors are really good, the best I've seen (with the GH6) from a Panasonic camera.
From what I've read, the sensors inside these two M43 cameras come from TowerJazz, as opposed to Sony with the GH5/G9/S5II/S5/S1H/S1. 

Yes, lots of stuff is done in-camera and cannot be un-done, so it's just a case of trying all the tricks we have and seeing how far we get.
If you do a custom WB on the G9ii and GH6 on the same scene, does it remove the differences in WB between them?

Ahah, no, of course it is on the original files, I never pixel peep on converted files.
I don't like the digital look at all like on smartphone (when everything is oversharpened), but I don't like digital processing making the image soft or sharp artificialy either. I sometime need to keep all the fine details for my videos, I don't want they have digital sharpening, I just want the same details as a raw photo without any digital processing. If I really need a soft image looking, I think the 1080P of my GH5 with a bit of un-sharpen is perfect, no need for a 4K or 6K camera.
If I un-sharpen a video file looking like a raw photo, as on the GH5, the result is good, because every details are there. But when I un-sharpen a file like on the GH6, it just doesn't look as good in my opinion, especially in low light, it looks more like if the image is upscaled.

My S5II also has bad processing going on internaly compared to previous S cameras, bad edge sharpening even in V-log, making the fine details less thin, and also chroma noise reduction more or less significant depending on the profile used. Of course, most of the time and depending on your screen, you need to crop in order to see the difference.
Digital processing like the Intelligent Detail Filter on the GH6 can certainly helps with moiré, but nothing come close to a OLPF like on the S1H for the nicest image quality. I even prefer to use my GH5 in low light compared to the GH6 below 1600 ISO, sure the GH6 is cleaner, but something just looks off about fine details rendering. Of course, downscaling the file to 1080P or viewing it on small screen doesn't make a big difference between both cameras. Again, it's really when cropping we can see that the details rendering is not the same.
But it is not so simple, because the colors of the GH6 are really really nice, I just love their new 25MP M43 sensor, it has natural and rich tones in video (and photos of course), nicer than on my S5II IMHO. Last time I loved the colors of a camera as much was with the Samsung NX1.
My G9II has more or less the same colors than the GH6, but on the cooler side, and more magenta overall. Nothing that can't be fixed in post though.

Yes, mostly because the AF is much better than the GH6, much faster and accurate, no more out of focus bug, nor pulsing in Open Gate mode. The GH6 was so bad when using low frame rate or when using Open Gate that I used much more my old GH5.
Also the G9II is significantly lighter than the GH6. Like you, I would like a GX9II (without 4K crop), I bet it could sell very well.
However, I still don't like the fine detail rendering in video compared to the previous Panasonic cameras like the S5/S1/S1H and GH5/G9. Since the GH6, the "improved" Intelligent Detail Filter makes the fine details very plastic in low light IMHO.

Yes, IBIS is very good on this lens, especially with the S5II and S1. Sometimes you can get it for about 800€ in Europe with cashback. It's a fine lens, even the colors are pretty nice.
The 70-200mm is pretty heavy yes, but the Sigma is not so much lighter. The bokeh is nicer on the S Pro. And I just love how the light renders on this lens, the local contrast and colors, this is truly beautiful, it's similar to the 24-70mm S Pro and it is why I prefer the S Pro lenses over the Sigma DG DN.

The 70-300 seems especially good with dual IBIS. I've seen some really decent footage. It's the only telephoto lens I'd consider. I'd much rather have it because you get an extra 100mm and only lose a stop over the 70 200 F4. That's an easy tradeoff; also, it's a bit lighter.
I've heard good things about it terms of IQ, but apparently it's rather heavy for what it is.

Yes, the 70-300mm is a nice "little" zoom. I have both the 70-300mm and the 70-200mm S Pro f2.8.

The 70-300mm is sharp across all focal lengths, maybe a bit softer at 300mm but still very good.
The difference with the 70-200mm F4 is not so huge since the S cameras have excellent low light performances.

The 70-200mm S Pro f2.8 is a different beast.  Yes, it's sharp, but the rendering is outstanding, maybe because of the implication of Leica (or not), one of the best lens I own with the 24-70mm and 50mm S Pro. 

I just got my G9II today.
So far, the AF is very good, I only tested the camera with two lenses, but the issues I had on the GH6 (pulsing, and out of focus bug) seem solved. The camera shows 1.0 firwmare, so maybe Panasonic has improved the focus since the beta firmware.

Yes, mostly because the AF is much better than the GH6, much faster and accurate, no more out of focus bug, nor pulsing in Open Gate mode. The GH6 was so bad when using low frame rate or when using Open Gate that I used much more my old GH5.
Also the G9II is significantly lighter than the GH6. Like you, I would like a GX9II (without 4K crop), I bet it could sell very well.
However, I still don't like the fine detail rendering in video compared to the previous Panasonic cameras like the S5/S1/S1H and GH5/G9. Since the GH6, the "improved" Intelligent Detail Filter makes the fine details very plastic in low light IMHO.

I've seen people saying that the G9ii is the best MFT camera ever made by Panasonic, so the comparison is being made.  
Of course, this leaves lots of room for improvement, as the GH6 has advantages over the G9ii, so an updated GH-line with full-sized body could exceed both, and a smaller bodied GX-line with some trickle-down features would also be a significant improvement to that line.

I just got my G9II today.
So far, the AF is very good, I only tested the camera with two lenses, but the issues I had on the GH6 (pulsing, and out of focus bug) seem solved. The camera shows 1.0 firwmare, so maybe Panasonic has improved the focus since the beta firmware.

I did the same. I'm pretty sure the camera will be available very soon and I prefer to wait for more users reviews. 
The price is relatively high for a M43 camera so I want more information on the DR, RS, and if they removed or not their digital low pass filter (intelligent detail filtering) like on the GH6. 

Ok. I've decided to wait a little longer for the G9 ii. I want to see how things shake out. Also, this camera is so popular that I'm fairly sure demand will be high and I won't even get it till mid November at the earliest... when I'll be heavily into work. I'll just go a little longer with the E-M1 ii and GX800. Other than the slow motion, they fit the bill for me right now. Make no mistake, I really want this camera though. It'll be available soon enough.

I have both the 10-25mm and the 25-50mm, these lenses are the pinnacle of M43.
Sure, they are very sharp, not extraordinary sharp as my 35mm GM, my 50mm S Pro or even my 24-70mm S Pro, but they are among the best you can find in M43. No, what make them special, apart from their focal range is their rendering.
Their local contrast (and colors in my opinion) is crazy good, especially the 25-50mm, one of my favorite lens ever.
I also have some of the fast little primes like the 20mm f1.7 II, the 15mm f1.7 and the 25mm f1.4 II.
They are not as sharp as the PanaLeica f1.7 zooms, but, the 20mm f1.7 is tiny, produce nice colors with good global contrast, and the image has a very good sense of volume, it is why so many people love it. The focus is slow and noisy (really noisy), but accurate, and from what I've seen the G9II makes the AF almost usable (certainly usable for me).
The 15mm and the 25mm are more expensive, slightly bigger, slightly less sharp wide open (especially the 25mm f1.4 which can be nice for video), but their AF is faster. 
They have not the same sense of volume as the 20mm in my opinion but they have solid local contrast, thought not as good as the Oly 25mm f1.2 Pro by exemple.

Those are good recommendations.
For pro lenses, I currently have 12-40 pro, 17mm pro, 40-150mm Pro f/2.8.
For non-pro, I have the 9mm, 14mm, 14-42 EZ (with a killer automatic lens cap), 17mm, 25mm, 45mm, 75mm, 75-300mm. I also just picked up (in a kit) the 12-32, and 35-100 f4-5.6, but I'm not sure I'll keep them.
I want the 25mm pro 1.2 when I find it at a decent price... and I'm determined I will. It would be great with the already amazing 17mm Pro.
I have thoughts on all these lenses that I'll probably share soon. (time permitted)

I have both the 10-25mm and the 25-50mm, these lenses are the pinnacle of M43.
Sure, they are very sharp, not extraordinary sharp as my 35mm GM, my 50mm S Pro or even my 24-70mm S Pro, but they are among the best you can find in M43. No, what make them special, apart from their focal range is their rendering.
Their local contrast (and colors in my opinion) is crazy good, especially the 25-50mm, one of my favorite lens ever.
I also have some of the fast little primes like the 20mm f1.7 II, the 15mm f1.7 and the 25mm f1.4 II.
They are not as sharp as the PanaLeica f1.7 zooms, but, the 20mm f1.7 is tiny, produce nice colors with good global contrast, and the image has a very good sense of volume, it is why so many people love it. The focus is slow and noisy (really noisy), but accurate, and from what I've seen the G9II makes the AF almost usable (certainly usable for me).
The 15mm and the 25mm are more expensive, slightly bigger, slightly less sharp wide open (especially the 25mm f1.4 which can be nice for video), but their AF is faster. 
They have not the same sense of volume as the 20mm in my opinion but they have solid local contrast, thought not as good as the Oly 25mm f1.2 Pro by exemple.

No, the GH6 is able to do 4K 120fps as well. 
The issue is with 5,7K, only available in 17:9.

I have the GH6, S5 and S5II. I don't see more moiré on the S5II compared to the S5. What I see on the S5II is more edge sharpening and worse fine details. Again, if you don't crop I don't think you can see a big difference.
The GH6 on the other hand is less prone to moiré, but since the S5, Panasonic uses some processing to minimize moiré :
"Intelligent detail processing eliminates the need for a low-pass filter and smooths fine details like hair and wires to minimize moiré patterns". 
On the GH6 the result is pretty good but maybe a bit too strong compared to their other cameras, the moiré is most of the time eliminated, but this is the same for some fine details. When I compare my video from my G9, GH5 and GH6, depending of the scene, the GH6 has often less fine details when looking them at 100%, especially in low light. At first I thought it was noise reduction, but the noise structure is very nice and seems unaltered. 
This is a sort of digital OLPF.
There is no miracle, in order to have the best picture (similar to a picture raw file), the less processing is always better, but moiré is certainly an issue for most people. It is why the Panasonic S1H has probably the nicest video quality from a camera below 4000$, details are less processed than the GH6 or the S5II, and the OLPF eleminates the moiré without looking unnatural. 

 

Yeah, I've seen moiré on that too. In fact, I don't know too many cameras that, with 100% certainty, don't have moiré. I'll bet even an ALEXA might have some frequency where it happens. Awhile back, I purchased some Ikea "lace" curtains and I notice a moiré effect with my naked eye, something that I thought was only possible on digital sensors, but I guess not. Oddly enough, none of my digital sensors would pick up the moiré patterns that I could see. It's 2023 and we've AI upresing and all other sorts of quality improvements, but no software AI has figured out moiré.

I have the GH6, S5 and S5II. I don't see more moiré on the S5II compared to the S5. What I see on the S5II is more edge sharpening and worse fine details. Again, if you don't crop I don't think you can see a big difference.
The GH6 on the other hand is less prone to moiré, but since the S5, Panasonic uses some processing to minimize moiré :
"Intelligent detail processing eliminates the need for a low-pass filter and smooths fine details like hair and wires to minimize moiré patterns". 
On the GH6 the result is pretty good but maybe a bit too strong compared to their other cameras, the moiré is most of the time eliminated, but this is the same for some fine details. When I compare my video from my G9, GH5 and GH6, depending of the scene, the GH6 has often less fine details when looking them at 100%, especially in low light. At first I thought it was noise reduction, but the noise structure is very nice and seems unaltered. 
This is a sort of digital OLPF.
There is no miracle, in order to have the best picture (similar to a picture raw file), the less processing is always better, but moiré is certainly an issue for most people. It is why the Panasonic S1H has probably the nicest video quality from a camera below 4000$, details are less processed than the GH6 or the S5II, and the OLPF eleminates the moiré without looking unnatural. 

 

I couldn't find any DR results either.  Let's hope that the people who give thorough technical reviews are still working on them, rather than it just being passed over for deeper technical investigation.

The little 20mm performs pretty well on this video. Much better than on the previous Panasonic cameras.
However I'm concerned about the G9II focus accuracy in video, I watched and downloaded some clips and a lot of times the focus is not 100% accurate when viewing at 1:1, exactly like on my GH6 with most of my lenses when using slow frame rate in 4K/C4K/5,7K (below 48fps). It seems to affect only some lenses on the G9II, mostly the zooms.
Nevertheless, I decided to preorder the camera because I'm not a fan of the GH6 ( (outside of the very nice colors).
I have some great M43 lenses, so some features like the improved IBIS, DRBOOST at base ISO or even the come back of the I-Dynamic are very welcome. I just hope they will fix the AF, I also hope the IBIS in 5,7K and Open Gate are improved as well, because on the GH6, they are weakier than on 4K.

The little 20mm performs pretty well on this video. Much better than on the previous Panasonic cameras.
However I'm concerned about the G9II focus accuracy in video, I watched and downloaded some clips and a lot of times the focus is not 100% accurate when viewing at 1:1, exactly like on my GH6 with most of my lenses when using slow frame rate in 4K/C4K/5,7K (below 48fps). It seems to affect only some lenses on the G9II, mostly the zooms.
Nevertheless, I decided to preorder the camera because I'm not a fan of the GH6 ( (outside of the very nice colors).
I have some great M43 lenses, so some features like the improved IBIS, DRBOOST at base ISO or even the come back of the I-Dynamic are very welcome. I just hope they will fix the AF, I also hope the IBIS in 5,7K and Open Gate are improved as well, because on the GH6, they are weakier than on 4K.