i’m an happy leica q new owner and used to use darktable or rawtherapee for my previous fuji x .
When i use dng files i get an uncorrected image, (cushion and vignetting).
If there a way to apply an autocorrection profile for the leica q ?
Hi,
the camera is supported by lensfun, and so in principle rawtherapee should be able to find the correction automatically.
There was however a bug in the matching logic (affecting only leicas, interestingly) that caused RT to fail. I’ve just pushed a fix – thanks for reporting, btw!
Darktable uses lensfun for lens correction. There is an entry for that camera in the latest database (added in late July), but it does not contain vignetting data, only TCA and distortion. (So you won’t get vignetting correction.)
Are you using the most recent version of lensfun? If so, is the camera/lens not showing up in the distortion module? Or is it showing up but you need to select it manually?
I don’t know if i use the last version of lensfun but i use the last Ubuntu version… I Will check the distortion menu.
I expected an autocorrection feature but i don’t really master the software though.
@gilgam could you take a raw photo of a clear blue sky, just the sky (i.e. point the camera up), and upload it for free use, so that I can use it as an example for that article?
OK, if it doesn’t show up in Darktable that most likely means that it’s an issue with your version of Lensfun.
If you’re using the stable version of Ubuntu and haven’t installed any unofficial package repositories, that would mean that your version of Lensfun is from early 2016. As the Leica Q wasn’t added until July of this year, then your Lensfun will be missing support for it.
If you’re not able (or don’t want to) update your Lensfun version, you might be able to grab the compact-leica.xml file from the Lensfun source and use that with your current version.
And i used shotwell with my leica q and the DNG are fine. I can work on them via the shotwell viewer as they are well developed, but it’s far from satisfying
No worries - I’ve been busy myself (new puppy :))
The Lensfun data is in package liblensfun-data-v1/zesty,zesty,now 0.3.2-3, which (according toUbuntu’s site) was updated in April 2016. The liblensfun-bin package contains an updater script, but I don’t know if it works, or where it pulls from (it didn’t work on my system.)
The following is the XML file for the Leica-Q. Download it and put it in $HOME/.local/share/lensfun/ (create this folder if it doesn’t exist) and your camera should show up in Darktable (and probably RT as well.)
Thanks it works indeed with darktable once i have updated in the sub menu
I haven’t found the right menu in rawtherapee yet (still searching though).
Thanks anyway i will work with my heavy dng files …