Seems much better to me, of course compared to existing lensfun ca correction, and also compared to autocorrection in the raw tab.
If you want to check also xtrans beahviour (where auto ca isn’t avaible, so even more important) some time ago i’ve posted also this: Lensfun Ca Correction
Files isn’t anymore on wetransfer but it’s here:DSCF6036.zip (21.0 MB)
Thank you and keep up the great work.