If you stick to "graymode" or the color modes (outputs R,G,B) it should be
fine: there is a bug that clips large signals to 1, which is really a bug
but has potentially been incorporated in many models. Certainly if you keep
the sum of values to 1, it should rarely cause a problem.

For HSL, yes, there may be a problem... but I'd be surprised if it is
related to filmic. If you want to do non-linear colour things, I'd suggest
colorcorrect.

The question really is what you want to achieve.

Cheers,
Graham


Le jeu. 3 sept. 2020 à 18:05, Mikael Ståldal <[email protected]> a écrit :

> After playing around with the channel mixer on some pictures, I get an
> odd effect sometimes. Just enabling the module with default settings
> sometimes affects the picture, the histogram jumps to the left and I
> lose detail in the highlights. Seems to happen when I also use filmic
> RGB. Is this intended, or a bug?
>
>
> On 2020-09-01 21:04, Mikael Ståldal wrote:
> > I have tried to use the channel mixer module, but I don't quite
> > understand it. I have only been able to effectively use the presets.
> >
> > I have read the user manual, but it didn't help much.
> >
> > I also looked at this video: https://www.youtube.com/watch?v=ZGvkSTjjtMw
> > but it seems like Bruce Williams was quite confused as well.
> >
> > Any suggestions for documentation or tutorials?
> >
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-- 
Graham Byrnes
Bron (Lyon), France
Mes photos: https://500px.com/grahambyrnes

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