Maybe a bit lighter
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I had a look at a map. Distance was more in the 5 km range…
another try…
the other version is way too dark for me …
Remove long distance haze_D200_20070802_2088_01.NEF.xmp (10.0 KB)
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Keep up the good work. Love the goatees! 
The challenge is getting rid of the colour cast.
Yes, but the hard part is knowing how to use the raw-black points module.
Rawpedia says nothing about haze: http://rawpedia.rawtherapee.com/Raw_Black_Points
But it seems to work very well in conjunction with the haze removal module.
But … How do you get those 239-530-477 values in this image?
The same here:
Where do the values 57-224-219 come from?
Do you have to calculate it by eye?
It must be a very well kept secret :))
Regards!
Changing raw black points alters the white balance as a side effect; however, it is counter-intuitive, so I don’t use this technique very much.
Typically, dehaze algorithms estimate what is called airlight (the particles in the air filter light like a lens) and use that to correct the colour. More advanced algorithms do pre- and post-corrections; and machine learning compares colours against similar subjects.
The RawTherapee poor_man_dehaze branch logs them in console when opening a raw 
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)Well that is very good and very useful! I’ll wait for it to merge with dev one day … or on 5.9 !!
Thank you.
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I was wondering this myself, thinking that @heckflosse’s solution was rather nice/clever but maybe not that practical.
Just merged that into my dev branch; That’s a nice one!
At its current info from the terminal state it is somewhat poor-mans indeed, but rather useful in some cases nonetheless! I’m sure you come up with something streamlined in due time 
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That also works in darktable btw, but there you have to enter the black levels in a different order (at least for Nikon D200 files) which makes it a bit harder…
In darktable for this file you have to use 530, 239, 477, 530
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I wasn’t able to use the_poor_man 
and i found the black points looking at Art raw histogram. Values of green and blue was a bit different from yours. 
Here is my take. RT Dev with local adjustments. The key was trying to push the shadows down and pull out some detail, all while trying not to look hyper-realistic by leaving some haze.
D200_20070802_2088-2.jpg.out.pp3 (44.8 KB)
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Thanks for sharing! I’m a little bit late to the party, but here is my take nevertheless.
D200_20070802_2088.NEF.xmp (16.2 KB)
and an alternative crop (and a little more pop to the trees)
D200_20070802_2088_01.NEF.xmp (16.3 KB)
DT 3.4.1 I did the dehazing with the dehazing module and local contrast - clarity with multiply blend, then removed the blue color cast with rgb levels
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another attempt …
could it be that this picture was photographed through a window pane? or why are there halos at the edges?
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Remove long distance haze_D200_20070802_2088_02.NEF.xmp (10.4 KB)
Definitly no.
hmmmm …
that would be too even for a ship window.
the clearer the structures and colors are, the more it can be seen around the whole picture. maybe that’s a phenomenon caused by the low contrast of the scene and a filter on the sensor. which is then reinforced and visible through the extremely strong post-processing.
…who knows 
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