This was a very nice challenge.
We don’t get many chances to play with the negadoctor module 
Thanks for sharing!
EDIT:
Also did one without using negadoctor or invert module:
Just had a look at your xmp: Very nice approach and no negadoctor to be seen. Have to remember that you can flip stuff like that using the curve module’s. Rather obvious, but that’s hindsight at work, right .
Anyway nice!
Almost… 
Less pro.
Yeah, it’s also my favorite approach.
By the way, @Jade_NL, I can’t open your xmp, what version of darktable do you have? I have 3.0.2 in Ubuntu 18.04, installed from OBS repo.
EDIT: I’ve seen now that you actually wrote down the version, sorry 
Had to use the development version. The moment I noticed that this was an actual negative I wanted to use Aurélien negadoctor module, which isn’t part of stable just yet.
I am going to do another edit using the one of the curve modules instead of negadoctor.
Pentax ME Super ?
Pentax K1000!
There you are!
So, as promised…
11.dng (25.3 MB)
Of course, licensed under a 
.
My version of it can be alredy found on my website.
Your second one with an old postcard vibe:
Darktable
Rawtherapee + Photoflow
exported neutral from rawtherapee with only an exposure boost
11.dng.pp3 (12.5 KB)
In photoflow I’ve used the G’mic interpreter for the negative inversion like it was recommended in one cineon pdf
http://www.dotcsw.com/doc/cineon2.pdf
negative->density-> log exposure-> linear rgb
-fill i=(i/255);density=log(1/i)/log(10);log_exposure=(density/0.6)-(685/1023*2.048/0.6);(10^log_exposure)*255
11.dng.pfi (21.6 KB)
Blue filter in Gimp
I never hardly ever get to work on negative, It’s freshly different, thanks for the opportunity
You’re very welcome!
If you never tried analog photography… well, be careful if you want to, it’s a very deep tunnel 
But it’s a different world altogether, from the scouting, through shooting, to the print 
I’m glad to see so many nice replies to my second one.
I like them a lot.
And I’ve seen that all of you thus far have experienced these very dark spots popping out on the right, as if some trees were completely black. I took some extra step in my editing to blend them in with the rest of the picture. They are a bit distracting to me, I don’t know where this effect is coming from, but it’s already like that in the negative (sort of fully white trees).
I wonder if it’s an effect of the film, that maybe is not sensitive to what reflected from there… It was the first roll of this film I ever shot (Kentmere 400).
Yeah, that was a problematic area…
I don’t have any experience with scanning negatives, but could this be a scanner issue? You mention using Kentmere film for the first time, could the scanner need other initial settings than those you normally use?
With this scanner, when set in raw mode, there is basically nothing you can set, a part from the double exposure (scan twice to do noise average). Even the exposure is basically fixed.
Anyhow, I’ve scanned maybe around 100 rolls with this scanner, but this was the first time I scanned a Kentmere, so that’s why I “blamed” the film itself.
EDIT: as further investigation, I took a quick picture of the film itself with the X100V 
Yeah, this isn’t a scanner thing, seems obvious once you look at the negative
True. I still haven’t decided if this is an interesting film or not…
(and I’m amazed how good a picture of it I could just quickly snap with the Fuji X100V handheld… why do I even bother with the scanner? 
)
