Raw files + white balance question

[Geoffrey LORD]

Hey,

I read this post where you gave info regarding new cameras' raw files, a subject which never worried me before as I had a 5D Mark IV until a few months ago.

Now, I have a GFX 100SII and it seems that it was added to Libraw in 0.22 PreRC1 on 1 November, 2025. Is it safe to assume that my raw files are therefore not supported yet? Just wanted to confirm since I hadn't noticed anything wrong with the panos that I stitched in the last few months using PTGui 13.2 .

However, I definitely noticed some white balance issues with a recent snowy mountain pano where everything appeared very blue/green (I import raws directly to PTGui since my last discussion with you, no more Lr for panos). Do you think that it's linked to the lack of camera support or rather because of how snow affects camera white balance? It was not really the case with a snowy mountain pano shot with the 5D Mark IV. 
In the screenshots, you can see the difference between Lr/Explorer and PTGui. 



EDIT: While testing to see the differences between my cameras, I feel like I've perhaps answered my own question... The 100SII is clearly affected while the 5D isn't really (although I do notice a slight difference in white balance, it's nowhere near what the 100SII is doing). I'm also noticing large exposure differences, PTGui always being a lot darker (not sure if related since it happens on all shots of all cameras tested). I also looked at shots that I took on a GFX 100S and they also don't change like the 100SII shots do.
I guess I just didn't think that the white balance was a big issue before these snow photos because I try to edit shots to have more contrast/saturation and to be a big greener ? It just did not look right when it came to snow!

Anyways, I'll leave the question for you to see, perhaps you'll have other insights :)

Also, I have other questions about banding (maybe a bit related since I felt like it wasn't as prevalent on previous cameras) and software performance, should I create separate threads for them or can I ask about them here?

Thanks!
Geoffrey

[PTGui Support]

Hi Geoffrey,

The GFX 100SII is supported in PTGui 13.3, I just tried loading a sample
image and it showed fine with correct white balance.

If you're still using v13.2, could you please update and try again?

If there's still an issue, just make your files available and I'll take
a look.

Note that raw development is a subjective process, so you might see
small differences between how ACR and PTGui develop them. But the
differences should be subtle (not like in your screenshots).

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

On 2/10/26 23:15, Geoffrey LORD wrote:
> Hey,
>

> I read this post <https://groups.google.com/g/ptgui/c/uDNT3lT1gUE> where

> you gave info regarding new cameras' raw files, a subject which never
> worried me before as I had a 5D Mark IV until a few months ago.
>
> Now, I have a GFX 100SII and it seems that it was added to Libraw

> <https://www.libraw.org/blog#:~:text=Fujifilm%20X-
> T50,-,GFX%20100S%20II,-Leica%20Q3%2043> in 0.22 PreRC1 on 1 November,

> 2025. Is it safe to assume that my raw files are therefore not supported
> yet? Just wanted to confirm since I hadn't noticed anything wrong with
> the panos that I stitched in the last few months using PTGui 13.2 .
>
> However, I definitely noticed some white balance issues with a recent
> snowy mountain pano where everything appeared very blue/green (I import
> raws directly to PTGui since my last discussion with you, no more Lr for
> panos). Do you think that it's linked to the lack of camera support or
> rather because of how snow affects camera white balance? It was not
> really the case with a snowy mountain pano shot with the 5D Mark IV.
> In the screenshots, you can see the difference between Lr/Explorer and
> PTGui.
>

> Compare White balance-4.png
>
> EDIT: While testing to see the differences between my cameras, I feel
> like I've perhaps answered my own question... The 100SII is clearly
> affected while the 5D isn't really (although I do notice a slight
> difference in white balance, it's nowhere near what the 100SII is
> doing). I'm also noticing large exposure differences, PTGui always being
> a lot darker (not sure if related since it happens on all shots of all
> cameras tested). I also looked at shots that I took on a GFX 100S and
> they also don't change like the 100SII shots do.
> I guess I just didn't think that the white balance was a big issue
> before these snow photos because I try to edit shots to have more
> contrast/saturation and to be a big greener ? It just did not look right
> when it came to snow!
>
> Anyways, I'll leave the question for you to see, perhaps you'll have
> other insights :)
>
> Also, I have other questions about banding (maybe a bit related since I
> felt like it wasn't as prevalent on previous cameras) and software
> performance, should I create separate threads for them or can I ask
> about them here?
>
> Thanks!
> Geoffrey
>

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[Geoffrey LORD]

I see, that'll teach me for not staying up to date! I'll get back to you when I update and run a quick test, Thanks!