In fact I am using Color Balance meanwhile and for the very most of my use cases this is working great.
But I am explicitly looking for a solution using the Tone Curve module - or someone telling me this just is not possible with this module and/or LAB color space. 2017-11-13 15:13 GMT+01:00 Guillermo Rozas <[email protected]>: > I would say "3.4.3.9. Color balance" is exactly what you are looking > for. Is a (non graphical) version of the RGB tone curves described in > Clarkvision's link. > Best regards, > Guillermo > > On Mon, Nov 13, 2017 at 11:07 AM, Bernhard > <[email protected]> wrote: > > you might use "3.4.3.8. Color zones" > > http://www.darktable.org/usermanual/ch03s04s03.html.php > > > > > > > > Manuel Coenen schrieb am 13.11.2017 um 14:30: > >> > >> Hi, > >> > >> I have been struggling and failing now for a while to achieve the > >> following: I want to modify only red (or green or blue) colors using the > >> tone curve as I would do this e.g. in GIMP, Photoshop or RawTherapee > using > >> the respective Curves Tools only set to the appropriate channel. > >> > >> Using the tone curve in manual mode in the upper right part of the a > >> channel might work but as the histogram only covers a very narrow part > at > >> the center there is not enough fine grained control for my purpose. So I > >> assume I need to set some kind of mask and use the L channel. > >> > >> I do not question the decision of using LAB color space for processing > >> here > >> (I get the pros I think) I only want to know what I have to set the > >> parametric mask to to only modify e.g. red colors as I would with a RGB > >> curve tool. > >> > >> If you want to know what exactly I am trying to do, look at > >> http://www.clarkvision.com/articles/astrophotography.image.processing2/ > >> Figures 4a and 4b > >> > >> Best regards > >> Manuel > >> > >> > >> ____________________________________________________________ > ________________ > >> darktable user mailing list > >> to unsubscribe send a mail to > >> [email protected] > > > > > > -- > > > > regards > > Bernhard > > > > http://www.bilddateien.de > > > > > > ____________________________________________________________ > ________________ > > darktable user mailing list > > to unsubscribe send a mail to darktable-user+unsubscribe@ > lists.darktable.org > > > ____________________________________________________________ > ________________ > darktable user mailing list > to unsubscribe send a mail to darktable-user+unsubscribe@ > lists.darktable.org > > ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
