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 Post subject: Hue / Saturation bug
PostPosted: 29 Jan 2012 1:23 
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Nouveau(elle)
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Joined: 29 Jan 2012 1:04
Posts: 3
Gender: None specified
PhotoFiltre version: 6.5.2
Operating System: Eternity XP (SP3)
Hi All,

I've been using photofiltre for a few days now and I'm starting to feel its one of the greatest freeware photo and picture editor apps for now compared to its simplicity. Really good work guys. This is now my number one.

Yet I still have to use ******** or ************ (no competitors here! :lol:) at times because the Saturation adjustment is not working in PF 6.5.2 as expected.

The bug is when I use saturation slider. It affects all colors' saturation no matter if I choose only one channel.
For instance: I want to lower yellow channel's saturation -> I choose yellow channel -> I turn the saturation slider down -> I see that all channels saturation is lowering, the image is going towards greyscale!

The same goes if I want to add some punch for one color via the saturation slider -> all the colors in the image are affected, not that particular one channel I chose.

Tested with several jpegs with different colors.


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 Post subject: Re: Hue / Saturation bug
PostPosted: 29 Jan 2012 3:03 
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Nouveau(elle)
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Joined: 29 Jan 2012 1:04
Posts: 3
Gender: None specified
PhotoFiltre version: 6.5.2
Operating System: Eternity XP (SP3)
I'm not experiencing this bug in all images but you can test it here.
Image
Open the image in PhotoFiltre and move the red or yellow saturation down. The blue colors are also getting dull.
In other editor it works fine.


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 Post subject: Re: Hue / Saturation bug
PostPosted: 31 Jan 2012 19:25 
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Administrateur(trice)
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Joined: 28 Oct 2003 23:49
Posts: 11862
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what function exactelly ? Hue / Saturation or Color balance ?


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 Post subject: Re: Hue / Saturation bug
PostPosted: 01 Feb 2012 0:54 
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Nouveau(elle)
Nouveau(elle)|Nouveau|Nouvelle

Joined: 29 Jan 2012 1:04
Posts: 3
Gender: None specified
PhotoFiltre version: 6.5.2
Operating System: Eternity XP (SP3)
Thank you for your question. The Hue/Saturation plug-in as stated.
Via color balance you only can balance colors, but not to lower (or boost) specific colors.

Image
(made with the fantastic screenshot plugin for Photofiltre)


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 Post subject: Re: Hue / Saturation bug
PostPosted: 03 Feb 2012 10:37 
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Administrateur(trice)
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Joined: 28 Oct 2003 23:49
Posts: 11862
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In your image the blue is not 100% blue but contains Red and Green. When you reduce the yellow, you reduce the Red and Green channel and this desaturate all colors.


Perhaps a better result with a tolerance for blue composit, dont'know how works exactelly other soft algorithm...


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 Post subject: Re: Hue / Saturation bug
PostPosted: 09 Feb 2021 20:02 
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Habitué(e)
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Joined: 13 Dec 2019 16:17
Posts: 71
Gender: None specified
PhotoFiltre version: 10.14.0
Operating System: windows 7
Processor: acer
RAM memory: 2 gb
Name plugin? Please


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