Bonjour Pierre, It looks duller because you also increased the yellows. Try grabbing the endpoint of the blue curve and als try reducing the yellows a bit. I also think that the Lab curves are a bit tricky. You can easily overdo it if you're not careful.
OK so I tried to implement it. I was gone from the PC for two months and the newest version of darktable baffles me. What happened to the LAB curves? I can see the contrast curve but what about the colors? Regards, Glad On 30.09.2014 08:57, Pierre Feissel wrote: > Hi, > > What about using the a and b curves of the tone curve, as a tutorial > somewhere on the DT website was suggesting ? increasing the slop of the > blue part of the b-curve should increase the blue saturation, from my > understanding. On the example below, the right side is the original, > whereas the left side corresponds to just a slop increase on the > blue/green parts of the b/a curves. Maybe too complicated and not subtle > enough? > > https://plus.google.com/photos/101321949327366021771/albums/6064750846647171873?authkey=CK_rz-ag9NSx6wE > > Yet, I don't understand why, when I compare the "original" photo from DT > and the screenshot provided by Fstoppers in eog, the DT one seems quite > dull compared to the other (whereas there should be no treatment). > Something I am missing ? > > Pierre. > > 2014-09-28 19:28 GMT+02:00 Michael Below <[email protected] > <mailto:[email protected]>>: > > Hi, > > Am So 28 Sep 2014 14:36:25 CEST > schrieb Gonçalo Marrafa <[email protected] > <mailto:[email protected]>>: > > > Yes i tried using the color zones tool but can't get the same effect. > > Only a blue tinted image... :( > > For me it works -- I open color zones, choose the saturation tab, > increase saturation for the blues by about 2 units, and move the other > color sliders a bit so that the increase is limited to the blues. > > As in the example on fstoppers, this increases blue saturation, (look > for the blue shirt in their example), but also overall color contrast > impression. > > An somehow similar way to increase color contrast in darktable is the > equalizer. I like to add a small bump to the middle of the chrominance > tab there. That keeps the color balance, but it might make reddish > faces worse, while the blue saturation doesn't. > > Cheers > > Michael > > > > ------------------------------------------------------------------------------ > Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer > Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports > Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper > Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer > > http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk > _______________________________________________ > Darktable-users mailing list > [email protected] > <mailto:[email protected]> > https://lists.sourceforge.net/lists/listinfo/darktable-users > > > > > ------------------------------------------------------------------------------ > Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer > Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports > Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper > Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer > http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk > > > > _______________________________________________ > Darktable-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/darktable-users > ------------------------------------------------------------------------------ Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
