Unfortunately reading the answer there is a bit like reading Greek to me. I can confirm this folder exists, full of xml’s. /Applications/darktable.app/Contents/Resources/share/lensfun/version_1
Is this correct… I download macports and type in lensfun-update-data. This will give me some files, which I then copy into one of the above folders?
I didn’t mean auto apply, I meant whether the correction was visually obvious.
I checked the names of two files that weren’t working, comparing the lens correction drop downs to the image information in darktable. Both had matching characters.
Appreciate the help.