[Play Raw] Enhance snowy mountain detail (high-frequency high-contrast) in RawTherapee

you know … attaching full hd resolution would have been enough. you dont need to attach 3x 11MB files to this thread for discussing.

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I don’t understand what you want to archive, anyway here is a tryout.

https://we.tl/t-rT7tAvHFAz

The main problem imho is “wrong”, unneeded iso 1250 that is killing all the advantages of a fullframe.

It is difficult to do this without the .nef file. I suggest you have a look at the [Play RAW] category rules and see if it is suitable for your image.

@shreedhar the nef is linked.

Moinchen, @Chymera!

Here is my first attempt in RawTherapee, using your .NEF as source.

camera.jpg.out.pp3 (11.5 KB)

Note: except for white balance, I have only used modules from
the Exposure tab (the first tab) in this exercise.

MfG
Claes in Lund, Schweden

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Oh I see. My bad @Chymera . I tried to click on the address in the first post and it did not work. Now I copy pasted it to a new tab and it worked. Thanks for pointing it out.

Here is my attempt using the nef file.
camera-1.jpg.out.pp3 (12.5 KB)

EDIT: I added Haze removal and corrected the colors to get this
camera-2.jpg.out.pp3 (12.5 KB)

The Chymera link gives me an error
" The requested URL /debug/rawtherapee/mountain_detail.zip. was not found on this server "

The DL address is what’s there WO the dot

http://chymera.eu/debug/rawtherapee/mountain_detail.zip

 
Contents:
13M camera.JPG
30M camera.NEF
10M from_jpg.jpg
12K from_jpg.jpg.out.pp3
11M from_nef.jpg
12K from_nef.jpg.out.pp3
64M total

Those were the days, going skiing…
Here’s my effort mainly using a Lab tone curve.
ski-scene-rawconvert

Here’s the curve -
ski-scene-lab-curve

@Chymera, this may be of interest -
https://paulsphotopalace.wordpress.com/2-tone-curve-your-single-point-of-success/

I see the Nikon jpeg has managed to suppress the lens flare rainbow top centre whereas the rest of us haven’t.

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With Haze Removal and more Lightness -

Indeed i’ve noticed too the lens flare rainbow suppression, this is the first time i see such a feature!

My first edit in RT was difficult. Was hardly able do improve it at all.

I also tried to erase unwanted reflections in the picture. Where is the spot removal/healing brush tool ? I can’t find it …

Then I tried to do some edit in DxO , and realized it is possible to restore the sunny green color in the trees.

DxO

Then i tried for more than one hour to do the same in RT. This is what I could do in RT 5.5

I guess a more experienced RT/dt user could do a lot more than me.

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:disappointed:

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Yeow, that was tough. The “thing” seems to be to get the halo around the sun to blend, rather that just blob out.

I tried RawTherapee first (don’t code on me, @Claes:smile:), but I’m not color-managing it yet so what looked okay in-program didn’t look the same exported.

So, I reverted to rawproc, opened it with dcraw ProPhoto colorspace and gamma, and build a rather challenging curve to do the “thing”. Bit of saturation, then resize/sharpen for output to sRGB colorspace. Let’s see how it looks out there:

Here’s a screenshot to show the curve it took:

Ok, this was a challenge…

I’m aware this isn’t a PlayRaw and the thread is actually about rawtherapee, but I just couldn’t resist giving it a try in darktable. Sorry! :smiley:

camera.NEF.xmp (6.0 KB)

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Here is an attempt with darktable and a bit of gimp:


camera.NEF.xmp (19.3 KB)

I think one of the problems in your attempts is that you lose a lot of detail to noise reduction. Curves + a bit of local contrast should get you pretty far already. With that said I always struggle with the local contrast in RT. :slight_smile:

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@Jonas_Wagner, how did you avoid the coloured flare streak please? Gimp?

Didn’t do anything to it, from all I can tell it’s still there. And looking at the image again a bit after editing, I guess I went a bit too crunchy and contrasty but oh well. It was about enhancing detail after all. :slight_smile:

I just curve-dragged it into clip oblivion. Above a certain point, everything is just white… :smiley:

Seriously, I’ve found that images with saturated pixels require such treatment if you do your processing “by hand” - white balance, in particular, separates the saturated channels, and the only realistic way to corral it is to set the white point at the lowest of the histogram spikes.

I noticed that this thread has been tagged #play_raw. If this is something that you want @Chymera, could you also supply a license for your images? (Unsure, since you weren’t the one who added the tag…) See: PlayRaw stuff to keep in mind.

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