@afre Many thanks for the review!
Exposition/tone mapping: You’re probably referring to the latest appimg, right? Actually I worked with the standard ubuntu ppa version, where neither the exp slider nor tone mapping exist, and when I try to open the pfi file from the latest appimg it crashes. I’ll take some time to migrate it and see what I can do.
Yes, it’s mine and no, no ACR involved. It’s 100% FOSS workflow.
And I agree with the issues you raised. As for the last one (halos on the left building), it’s a lens distortion issue, I got that on all my pictures. You see, I’m using a rather old and simple PS powered by CHDK, hurt by time and (mis)use: the zoom no longer works and bad pixels are a plague. Anyway, I can still get some interesting results (specially when I stack many frames, where I get a boost in resolution and definition), and the possibility of getting raw files from there is a plus (thanks to CHDK devs). I don’t call it a camera, I like to think of it as my photon collecting device, a cheap one.