Is it possible to add personal lensfun data?

Software RawTherapee
#1

I have just received a new lens for my camera and I discovered that it is not present in lensfun.
I am calibrating it and I will share the resulting data with the lensfun project, like I have already done.
Since I have already done it I know that probably it will take a rather long time before I will find the data in the lensfun copy included in RT. I am sure that they will not be available in version 5.9, for example.
Moreover, I have calibrated the distortion of another lens with slightly different results than the lensfun ones. I prefer my calibration but there is no real reason to replace the official data with my result.

This will cause problems when I update RawTherapee. Of course I might manually edit the xml files, but that is not an optimal solution.

So here is the question: is it possible to create some lensfun files for my personal use, with data for a few lenses, so that those data will be used instead of the official lensfun ones, or if there is no lensfun entry?

Thanks in advance.

Fulvio Senore

#2

Run the command lensfun-update-data as root and you will receive an update of the lensfun database. You never need to wait until a new RT version has the the new data you are looking for. If you can have a custom folder I don’t know. Sorry.

#3

Yes, ~/.local/share/lensfun.

#4

Thank you. Is it enough to create a file with only the few lenses that I calibrated or should I create a more complex file?

#5

The new lens data should be enough.

#6

To add user lens correction, perhaps have a look here Lens correction with modern cameras

#7

Thank you, I will try as soon as the lens calibration will be done.