Can't reduce saturation of only 'Red'.
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In editor, with Color> Hue/Saturation/Lightness>Channel Red (in the drop-down list), I can not reduce saturation of only 'Red' channel.This reduces saturation of all channels in spite of selecting either Luminosity or Red or Green or Blue in the drop-down list.
My Nikon D40 gives much saturated (red) skin in portrait mode.Is there any way to achieve this? Reducing level of red is not useful as we need to reduce only saturated reds, not all reds in the image. Reducing 'Temperature' in 'White Balance' overexposes the image,but seems this is the only solution presently. In many tools,selecting one among Luminosity,Red,Green or Blue from the drop-down menu does not make any difference besides showing graph for that color.
Jagdeesh Deshpande.
Registered Linux user #492893 |
Re: Can't reduce saturation of only 'Red'.
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And colors balance tool ?
2010/8/20 jag59 <[hidden email]>: > > In editor, with Color> Hue/Saturation/Lightness>Channel Red (in the drop-down > list), I can not reduce saturation of only 'Red' channel.This reduces > saturation of all channels in spite of selecting either Luminosity or Red or > Green or Blue in the drop-down list. > My Nikon D40 gives much saturated (red) skin in portrait mode.Is there any > way to achieve this? > Reducing level of red is not useful as we need to reduce only saturated > reds, not all reds in the image. > Reducing 'Temperature' in 'White Balance' overexposes the image,but seems > this is the only solution presently. > In many tools,selecting one among Luminosity,Red,Green or Blue from the > drop-down menu does not make any difference besides showing graph for that > color. > > ----- > Jagdeesh Deshpande. > Registered Linux user #492893 > > -- > View this message in context: http://digikam.1695700.n4.nabble.com/Can-t-reduce-saturation-of-only-Red-tp2332476p2332476.html > Sent from the digikam-users mailing list archive at Nabble.com. > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users > Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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Tanks for reply,but colors balance tool can not do this thing.
Without affecting any other color,saturation of red is to be reduced to adjust skin tone. This is very easily possible in GIMP by selecting 'red instead of default master' in the 'hue-saturation tool' and reducing it's saturation. BTW... forgot to mention in the last post that I am using Digikam 1.3.0 & OS is PCLinuxOS-kde 4.4.5.
Jagdeesh Deshpande.
Registered Linux user #492893 |
Re: Can't reduce saturation of only 'Red'.
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You can use the vibrance slider in the brightness contrast gamma tool.
It does exactly what you want. Julien Le 20 août 2010 à 18:28, jag59 <[hidden email]> a écrit : > > Tanks for reply,but colors balance tool can not do this thing. > Without affecting any other color,saturation of red is to be reduced to > adjust skin tone. > This is very easily possible in GIMP by selecting 'red' in the > 'hue-saturation tool' and reducing it's saturation. > > BTW... forgot to mention in the last post that I am using Digikam 1.3.0 & OS > is PCLinuxOS-kde 4.4.5. > > > ----- > Jagdeesh Deshpande. > Registered Linux user #492893 > > -- > View this message in context: http://digikam.1695700.n4.nabble.com/Can-t-reduce-saturation-of-only-Red-tp2332476p2332729.html > Sent from the digikam-users mailing list archive at Nabble.com. > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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@Julien Narboux
Vibrance slider is in Hue/Saturation/Lightness (digikam 1.3.0) and it affects all channels in spite selecting red or any other . What I expect is......as in levels tool,in HSL tool also the effect should be only on selected channel 'red' and never on all channels. On Fri, Aug 20, 2010 at 1:32 PM, Julien Narboux <[hidden email]> wrote: You can use the vibrance slider in the brightness contrast gamma tool. -- J.L.Deshpande Registered Linux user #492893 Help yourselves by using Linux. See details at http://www.whylinuxisbetter.net/ _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users
Jagdeesh Deshpande.
Registered Linux user #492893 |
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In reply to this post by jag59
At last I found the solution,though not direct but can say a workaround. In Color>Hue/Saturation/Lightness......reduce saturation to @ (-)40 and then increase vibrance to 70.This attends the over saturated skin tones without affecting other colors. This gives almost same results which I get in GIMP by selecting 'red instead of default master' in the 'hue-saturation tool' and reducing it's saturation. Hope in future version the sliders in H/S/L tool will work only on selected channel. Regards.
Jagdeesh Deshpande.
Registered Linux user #492893 |
Re: Can't reduce saturation of only 'Red'.
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Open a new file in bugzilla about this wish...
Gilles Caulier 2010/9/7 jag59 <[hidden email]>: > > > jag59 wrote: >> >> In editor, with Color> Hue/Saturation/Lightness>Channel Red (in the >> drop-down list), I can not reduce saturation of only 'Red' channel.This >> reduces saturation of all channels in spite of selecting either Luminosity >> or Red or Green or Blue in the drop-down list. >> My Nikon D40 gives much saturated (red) skin in portrait mode.Is there any >> way to achieve this? >> Reducing level of red is not useful as we need to reduce only saturated >> reds, not all reds in the image. >> Reducing 'Temperature' in 'White Balance' overexposes the image,but seems >> this is the only solution presently. >> In many tools,selecting one among Luminosity,Red,Green or Blue from the >> drop-down menu does not make any difference besides showing graph for that >> color. >> > > At last I found the solution,though not direct but can say a workaround. > In Color>Hue/Saturation/Lightness......reduce saturation to @ (-)40 and > then increase vibrance to 70.This attends the over saturated skin tones > without affecting other colors. > This gives almost same results which I get in GIMP by selecting 'red > instead of default master' in the 'hue-saturation tool' and reducing it's > saturation. > > Hope in future version the sliders in H/S/L tool will work only on selected > channel. > > Regards. > > > > > ----- > Jagdeesh Deshpande. > Registered Linux user #492893 > > -- > View this message in context: http://digikam.1695700.n4.nabble.com/Can-t-reduce-saturation-of-only-Red-tp2332476p2529053.html > Sent from the digikam-users mailing list archive at Nabble.com. > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users > Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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Anyway, something seems a little not inaccurate for me. I don't think it's
possible to reduce saturation for the red channel only, since the saturation result of the proportion between different channel. So there's no truly a reduction of the red saturation value, but a reduction of the saturation, only applied on a mask which contain pixel with a certain hue. I test Gimp tool on a picture with a pink cloth, if i selected red in place of master channel, and set the saturation to 0, there's still some spots unaffected which are more associated with magenta "channel", so it's not really a reduction of the saturation of a channel, but of a range of hue original value. But at the end, it's anyway the result the main thing ;>) Nicolas Le Tue, 07 Sep 2010 06:59:31 +0200, Gilles Caulier <[hidden email]> a écrit: > Open a new file in bugzilla about this wish... > > Gilles Caulier > > 2010/9/7 jag59 <[hidden email]>: >> >> >> jag59 wrote: >>> >>> In editor, with Color> Hue/Saturation/Lightness>Channel Red (in the >>> drop-down list), I can not reduce saturation of only 'Red' channel.This >>> reduces saturation of all channels in spite of selecting either >>> Luminosity >>> or Red or Green or Blue in the drop-down list. >>> My Nikon D40 gives much saturated (red) skin in portrait mode.Is there >>> any >>> way to achieve this? >>> Reducing level of red is not useful as we need to reduce only saturated >>> reds, not all reds in the image. >>> Reducing 'Temperature' in 'White Balance' overexposes the image,but >>> seems >>> this is the only solution presently. >>> In many tools,selecting one among Luminosity,Red,Green or Blue from the >>> drop-down menu does not make any difference besides showing graph for >>> that >>> color. >>> >> >> At last I found the solution,though not direct but can say a >> workaround. >> In Color>Hue/Saturation/Lightness......reduce saturation to @ (-)40 and >> then increase vibrance to 70.This attends the over saturated skin tones >> without affecting other colors. >> This gives almost same results which I get in GIMP by selecting 'red >> instead of default master' in the 'hue-saturation tool' and reducing >> it's >> saturation. >> >> Hope in future version the sliders in H/S/L tool will work only on >> selected >> channel. >> >> Regards. >> >> >> >> >> ----- >> Jagdeesh Deshpande. >> Registered Linux user #492893 >> >> -- >> View this message in context: >> http://digikam.1695700.n4.nabble.com/Can-t-reduce-saturation-of-only-Red-tp2332476p2529053.html >> Sent from the digikam-users mailing list archive at Nabble.com. >> _______________________________________________ >> Digikam-users mailing list >> [hidden email] >> https://mail.kde.org/mailman/listinfo/digikam-users >> > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users -- Nicolas Boulesteix - Chasseur de lueurs - http://www.photonoxx.fr _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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You are right.
Jagdeesh Deshpande.
Registered Linux user #492893 |
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