Clipped highlights and almost black & white

Software darktable
1

Here’s the raw:

dodoite-20131024-2673.cr2 (25.8 MB)

Here’s the xmp:

dodoite-20131024-2673.cr2.xmp (9.0 KB)

and here’s my b&w attempt:

dodoite-20131024-2673_01
dodoite-20131024-2673_011500×1125 177 KB

There’s still some magenta, in the white fur below the neck and on the shadows of his nose, that I’d like to get rid off.

How would I do that?

Thanks

This file is licensed Creative Commons, By-Attribution Non-commercial.

2

This is strange. Your image definitely has a magenta cast on the PIXLS site. But when I downloaded your JPG, it first opened with that magenta cast and then corrected itself to match your split toning. Opening the file in DT looks correct as well. FWIW, my monitor is calibrated.

3

I’m also calibrated with displaycal. But I use xfce on debian and no the cast doesn’t resolve itself.

Thanks

4

I’ll check your xmp…I think its filmic…use either no for color preservation or the legacy Euclidean …these I found to be the best at dealing with your blown region…

5

Could it just be compression artifacts? I also can’t see them in DT or on exported 16 bit TIFF, but on JPG. The more compression, the more magenta artifacts. With 177 kb, the attached JPG can be at best 70 % quality setting and it looks generally very compressed.

6

It is indeed:
Screenshot_2022-01-19_17-51-57

Even at 100% (0% compression) quality, there is still some magenta cast but much less.

7

Yes, I’m using filmic. It was set preserve chrominance. After trying them all, I settled on: no and I also altered the split toning which also helped.

Thanks

8

It is the combination of what you select for highlight reconstruction and what color preservation mode you set…my quick play did seem to get a pre BW best of no or the legacy mode…but even those changed a bit if I used a different mode for highlight reconstruction…I also played with filmic reconstruction…

There was no magic bullet as the area was badly blown out…

Hopefully you got a useable solution…

My quick effort
dodoite-20131024-2673.cr2.xmp (11.2 KB)
Just used CC to make the BW

dodoite-20131024-2673_02
dodoite-20131024-2673_025202×3464 2.21 MB

and

dodoite-20131024-2673_03
dodoite-20131024-2673_035202×3464 2.18 MB

9

I’ll spent the time analyzing your sidecar.

Thanks for taking the time and sharing your knowledge.

10

Don’t spend too much time one it… :slight_smile: I rarely do BW so my contribution is useless I am sure…