Hi there !
I’m trying to learn how to use rawtherapee (first RAW editor I’ve ever used), and I ran into some trouble with the “preview the sharpening contrast mask” feature.
If I open a .jpg file, the mask actually displays and works, but whenever I try it with my .nef files, I just get a black (zoom > 100%) or white (zoom < 100%) screen.
What am I doing wrong there ?
Thanks !
Hi @Mateiyu, and welcome!
Are you on Windows, Mac or a Linux machine?
Version of RawTherapee?
Could you please share one of your troublesome .NEFs?
Have fun!
Claes in Lund, Sweden
I have the same problem. RAW files from Panasonic and Canon.
When zoomed to 100% and the mask is enabled, the area is black or white. There are no edges.
I am using MX Linux and the latest version of the RT appimage application. The previous version 5.11 from the deb repository has the same problem.
Is your Sharpening module enabled?
Have you altered the contrast threshhold? If it’s too low (e.g. 0) then the mask is white, if it’s too high, it gets dark, sometimes black.
Yes, enabled
Yes, I am increasing the sharpening intensity.
The contrast mask works completely randomly. Sometimes it displays, and sometimes it doesn’t, showing a completely black screen.
Sometimes the mask does not display at all, and only white dots are visible in the photo.
I noticed that this is related to displaying the photo in full 1:1 resolution.
If RT displays full resolution, the mask causes the problems described above, and if RT displays the image at 1:1 magnification
without full resolution, the mask displays correctly.
I think this has to do with the fact that I use a 4k monitor.
Rawtherapee works very poorly with 4k.
In any case, it’s not a big problem. I don’t use the contrast mask very often.
Displaying the image in full 1:1 resolution is also random 
I use a 4k monitor too, but I can’t say, RT works poorly with it. But I’m using Manjaro with Cinnamon desktop or, by dual boot, Win11 - both without problems.
Perhaps settings of resolution and scaling? I can only guess. It might also be the combination of distribution and desktop.
Perhaps it is a matter of screen scaling.
I use KDE Plasma and have 160% scaling enabled.
For a while, I used Mint Cinnamon without scaling and everything worked fine, but the whole interface was very inconsistent.
Some elements were large, others small.
Supporting a 4k monitor without fractional scaling is unthinkable.
4k and MX Linux: no problem here.
What GFX do you have?
How much RAM?
1 Like
i5 processor
NVIDIA 1030 graphics card
16 GB RAM
MX links to arch for xfce, but there also a chapter for KDE Plasma:
https://wiki.archlinux.org/title/HiDPI#KDE
I don’t know, if you have these informations already.