Is it any different from velvia iop in darktable?

On Thu, 10 Oct 2019 20:44:25 +0200
Keresztes Barna <kba...@gmail.com> wrote:

> Hi all,
> 
> I'm a happy user of Darktable! One of my favorite tools in the 2.7 branch
> is the *Basic Adjustments tool*, where I can find in one place most of the
> tools I need to make quick adjustments for my image.
> 
> I would like to add a *vibrance* *slider* to this tool. It affects the
> saturation of the more saturated pixels. It can be used to accentuate the
> colors without becoming unnatural (as it's often the case of the saturation
> tool). It also has negative values, so you can use it to make your colors
> fade.
> Used together with the saturation slider, you can also work on less
> saturated areas of the image. Otherwise it doesn't change a lot the
> inderface and it fits well in the Basic Adjustments tool.
> 
> It is similar (and similarly positioned) as the vibrance tools in Lightroom
> and Aftershot Pro (ASP) and probably other similar software. Note that it
> uses a different algorithm than ASP, it's also different from the Vibrance
> tool of DT.
> 
> What do you think about the idea?
> 
> Before pushing it to the main branch, I would like to ask you to test it!
> You can find my modifications in my fork on Github:
> https://github.com/kbarni/darktable
> 
> What do you think? Do you like the results?
> 
> The OpenCL part is untested (don’t have the hardware), so it needs to be
> checked too.
> 
> P.S. This is my first contribution to DarkTable; however I developed
> several plugins for Bibble/Aftershot Pro, some of which become part of the
> core tools.
> 
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