Le ven. 4 sept. 2020 à 02:21, Graham Byrnes <[email protected]> a écrit :
> 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. > Except that the topic of this thread was exactly that the OP is experiencing problems even when leaving the sliders at defaults in channel mixer (where it is just applying an identity matrix with the sum of each row being 1). So, to try to claim this clipping behaviour (I say behaviour rather than bug) rarely causes a problem is not really true. BTW, the gray mode is also subject to this clipping behaviour. The HSL mode clipping implementation really is broken, and there I would absolutely call it a bug. In Aurélien's article "Darktable 3.0 for Dummies: hardcore edition", he admits he has been using a hacked version of the channel mixer that takes out the clipping behaviour. In order to bring that into an official release though, it needs to be done in a robust way, and there have been discussions on github on how to achieve exactly that. ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
