that must be it, as I didn’t touch that…
Highlight reconstruction in ART do not offer Luminance recovery as an option.
So I was unable to get a good result with this file. Compare the results in the two pictures here
if you can share the raw, I’ll take a look
Thanks for the example. Indeed, color propagation fails here, producing the ugly pink hue. I need to dig deeper to understand why, it might take a while…
blend avoids the pink cast almost completely, but it gives a washed out look in the clouds.
In both cases, however, you can still work around the problem, by selectively desaturating the pink and/or boosting the details in the clouds a little bit. Example:
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ART lesstools
auto matched tone curve profile, color propagation, tone equalizer white and highlights, tweak of tone curve
a-IMG_6971-5.jpg.out.arp.txt (9.3 KB)
There is a slight pink cast also in the part of sky that is not overexposed (so not processed by color propagation). I don’t know if it is normal or a problem of camera WB. So I made a WB correction, picking in the normally exposed sky.
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RT exhibit the same behavior except that using luminance recovery is a way to work around the problem. Perhaps a quick solution is to introduce luminance as an option. But certainly you are right the problem deserve to be understand.
What ever thanks very much for your help.
SM
ART_master_0.1-59-g8f3204094_W64_SSE4_190925.7z
and
ART_lesstools_0.1-66-gb81081f20_W64_SSE4_190926.7z
uploaded at
https://keybase.pub/gaaned92/ART-W64NightlyBuilds/
@agriggio you made a great scrubbing and rearrangement of the tools. I think it is much simple and logical.
- It seems that the brightness slider disappeared. Should instead we use the tone equalizer ?
- With color propagation, I used tone equalizer to get back overexposed values. It works but is it the best way?
- already in master, you suppressed in the vibrance tools the pastel /saturation sliders I thought useful in some cases. Do you have a reason? or a replacement tool?
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ganned92 I did not succeed using the method you proposed.
Sorry
SM
I did that with the lesstools branch build. Same with master branch.
IMG_6971.CR2.arp.txt (19.6 KB)
Use this profile with arp on your photo to see what I did.
I discovered that Chromatic aberration corection/automatic has to be set to obtain correct correction with color propagation. It’s set with all profiles I use so I never was aware of that.
Thank very much for your file.
What I observed is that two main parameters are involve :
First the more important to activate the auto-correction (Chromatic aberration correction) in the RAW menu.
Then adjusting the tint cursor in the white balance menu.
See attached files.IMG_6971-5.jpg.out.arp.txt (9.0 KB)
For the white balance, I used the pick function (pipette) somewhere on the clouds at bottom left.
This chromatic aberration correction/auto-correction is very useful and works better than other methods.
Hope it can solve your problem 
Can you reproduce?
ART lesstools
with a-IMG_6971-9.jpg.out.arp.txt (9.5 KB)
IMG_6971.CR2 has a serious pink cast. see at 100% or save.
tone equaliser, exposure compensation, tone curve, or slope in colour correction. brightness was essentially a parametric tone curve, and I never quite liked it…
I usually first adjust the exposure slider to put the histogram where I want it. then, you can tweak the highlights with the tone equaliser (or with colour correction if you prefer)
in general, I’m trying to reduce the number of tools to the bare minimum. of course, I’m doing it according to my preferences, and sometimes it might not be obvious to see the replacement. I need to play with the reduced tool set for a while to see if it works. however, in the specific case of vibrance, you can use saturation with a chromaticity mask in the colour correction module.
incidentally, you might have noticed I mention colour correction a lot. I think that is the single most important tool of art. you would probably be able to develop a whole picture by using just that single module (and demosaicing of course). in fact, it might be a fun exercise… 
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Thanks for your answers @agriggio
yes I should have thought of that!
lesstools branch
- I opened a ticket for the pink cast with lesstools.
- I see that in local contrast, you keep also unsharp mask. In RT I far preferred the wavelet local contrast, compared to the local contrast.
It seems localcontrast/unsharp mask is an improved tool which can also modulate the global contrast.
Why you kept the 2 tools?
In local adjustment, what tool should I use to get the same effect?
With Color correction contrast (power…) , I did not succeed.
thanks, I’ll take a look asap
because I’m not done yet you’re right, the simple local contrast will go
cbdl will get you close; if that’s not enough, you can add a touch of texture boost
Sorry, I don’t stop asking questions.
I digitizing very old family photos (Nineteenth century) made by professionnals.
In RT, after BW, I can use color toning/color correction region to give the required tint (different sorts of sepia).
I cannot happen to tint a BW photo in artless
correct. That’s because I moved B&W towards the end of the pipeline, as requested by @sguyader (see this post). You can desaturate with colour correction and then apply the grading you want.
I get a grey photo. ok. I can change contrast and so on.
Ok vith a new correction
Thanks.
Note: it shows that understanding how the pipeline is organised is important for user.
I get a grey photo. ok. I can change contrast and so on.
Ok vith a new correction
Thanks.
but B&W is not very useful for me in this case. I wonder if I can use CBDL as it is useful to soften the aspect as in original. will try.
note: it shows that understanding pipeline organisation is important for user.