Dev Log September 2025

Not as much as I wanted to do was done in September.

libopenraw

Extracting more of the calibration values for colour correction on DNG. Currently work on fixing the purple colour cast.

Added Nikon ZR and EOS C50.

ExifTool

Submitted some metadata updates to ExifTool. Because it nice to have, and also because libopenraw uses some of these autogenerated: I have a Perl script to generate Rust code from it (it used to do C++).

Niepce

Finally merged the develop branch with all the import dialog work after having requested that it be removed from Damned Lies to not strain the translator is there is a long way to go before we can freeze the strings.

Supporting cast

Among the number of packages I maintain / update on flathub, LightZone is a digital photo editing application written in Java¹. Updating to the latest runtime 25.08 cause it to ignore the HiDPI setting. It will honour GDK_SCALE environment but this isn't set. So I wrote the small command line too gdk-scale to output the value. See gdk-scale on gitlab. And another patch in the wrapper script.

HiDPI support remains a mess across the board. Fltk just recently gained support for it (it's used by a few audio plugins).