Sony A9 III (ILCE-A9M3) noise profile support about darktable HOT 6 CLOSED

Hum... at 250 ISO the curves are not looking good to me. Again I'll let @rawfiner validate.

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Indeed it looks different. I don't know anything about that - every file was created the same way as discribed in the tutorial.
I also tried it on an ISO250 image an the result in general seems to be fine.

If needed, I can redo the calculation.

from darktable.

If needed, I can redo the calculation.

Yes, maybe with pictures with a larger luminosity gradient, it seems that there is not a lot of low light gradient.

from darktable.

Looks like there is a change in the gain stage at both ISO 250 and 800:

https://www.photonstophotos.net/Charts/PDR.htm#Sony%20ILCE-9M3

I.e., expecting to see identical results for 125/160/200 and 250/320/400?

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So I retook the pictures and checked spezifically to take the lowes values in exposure to not get the overexposed warning at ISO250. One step in ISO but multiple in time.

It still looks pretty much the same to me?

darktable-noiseprofile-20240520.tar.gz

Am I missing or missunderstanding something, when taking the pictures?

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Ok, let's go with this last profile, still looking a bit "chaotic" at 125 & 250 ISO but the rest is ok to me.

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