add Sony ILCE-1M2 noise profiles

[zechenturm]

Addresses #18844

[kmilos]

Btw, the noise profile doesn't depend on the input color matrix, right?

[zechenturm]

Honestly, no idea , I just followed the tutorial. What I do know is that the profiles work great for me testing locally, though given that I'm testing with the exact camera that created the profiles that might not say much. How could we/I test that?

[kmilos]

How could we/I test that?

If you created the noise profile w/ a recent (after March 21) nightly build, than everything should be ok.

If you created it w/ 5.0.x, the color matrix will change in a future dt version (most likely in the upcoming 5.2). You can test the change here: darktable-org/rawspeed@2579537

[zechenturm]

Ok, thanks for the info. I'm using darktable 5.0.1 as shipped by Arch. I've manually edited /usr/share/darktable/rawspeed/cameras.xml to contain the new color matrix values and regenerated the noise profiles. According to diff they are identical. So I think we're good.

If anyone wants to double check: darktable-noiseprofile-20250521.tar.gz

[kmilos]

As expected, thanks for checking!

[zechenturm]

My pleasure!