heya, the channel mixer works in output colour space, right? so i'd expect the results to vary randomly between what you see on screen and what you export for print. i would probably try to produce the same effect with a Lab space module (color correction, monochrome, color zones, maybe all of them in combination with parametric masks?).
-jo On Tue, Jan 12, 2016 at 8:48 AM, Marcial Gómez Martín <mmg...@openmailbox.org> wrote: > Hi all, > I have indeed my display profiled, but it is not a question of a subtle > colour cast. The situation is as follows: > I apply the B/N preset of the Channel mixer. When I see the preview > (Darkroom mode) the result is very similar to what I get if I apply the > monochrome module: there's a blue colour that turns into a light grey. > After exporting the image, this same blue results into an almost black tone. > In the channel mixer module, the B/N preset is about 200 red, 700 green > and 100 blue (roughly) in the grey "output" and the result is, as I > said, similar to that of the monochrome module. In darkroom mode the > preview is correct. In the lighttable preview it is already wrong, and > the exported JPG has the blue almost black. > To mimic this tones in the channel mixer preview, I have to push the > blue slider to about -150/200 and increase red and/or green channels. > I don't know if someone is experiencing something similar. This is the > Debian testing package from the repos. > Regards > > > El 11/01/16 a las 09:09, Sebastian escribió: >> Hi, >> >> Do you have a profiled display and the image viewer does not support >> color management? >> >> Sebastian >> >> On 01/10/2016 08:52 PM, Marcial Gómez Martín wrote: >>> Hello everyone. >>> I've noticed an issue regarding the channel mixer. >>> When I choose the B/N preset it is fine in darkroom mode, but, if I >>> export it. the jpeg appears to have way less blue than expected. >>> I've just installed the DT 2.0 from the Debian testing repositories. >>> Apart from that, when I try to open an image in the new printing >>> module, it doesn't appear at all. >>> I hope it can help polish this fantastic piece of software! >>> Regards, >>> Marcial >>> >>> > > > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 > _______________________________________________ > Darktable-users mailing list > Darktable-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/darktable-users > ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Darktable-users mailing list Darktable-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/darktable-users
