Swift play with the Channel mixer...

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Hi all,

The last days’ discussions about the Channel mixer module in darktable have been very interesting.

I just shot a daffodil, brought in from the garden. Handheld, lens 40mm/1.8 Hexanon at full opening. I know, I should have used the tripods and a reflector &c &c, but actually, for this experiment that would not matter that much.

Here is the daff before…

daff_before
daff_before1250×1200 1.55 MB

… and now after the Channel mixer module.

daff_after
daff_after1250×1200 761 KB

Quite an interesting effect, don’t you agree?

Channel mixer settings:

destination gray
red 0.180
green 0.072
blue -0.226

blend mode lightness.

Have fun!
Claes in Lund, Sweden

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I found this short video and this may be one of the best demonstrations that I have come across…its from affinity but really it could be any software…he does a great job so for those still a bit perplexed I think this is really great https://www.youtube.com/watch?v=zgTLw31PVNs

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Neat effect!
I reedited an image from last year, which was a bit lacking in punch.

So a quick application of channel mixer, using similar settings applied to grey channel via lightness blend mode, and it looks a heck of a lot more interesting!

(Unedited image on LHS)

darktablechannelmixer
darktablechannelmixer1920×1080 876 KB

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There are three color presets in the Channel Mixer that can give nice punch some times…ie the color boost contrast boost and artifacts boost…I sometime test them when I am looking for some stronger color or contrast…

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