We’ve talked about this quite a bit here on this forum:
- Exiv2 and Darktable Lens Identification - #2 by paperdigits
- My tamron lens is not automatically detected. [solved] - #10 by Claes
- updating LensType tag with exiv2/exiftool for Canon RF lens - #7 by asn
- Darktable / Lensfun / Canon R6 / Tamron 10-24 EF-S| Lens is included in Lensfun but not accesable in DT - #2 by Macchiato17
- Distortion Correction in Darktable - #10 by piratenpanda
Glad you found your way to a solution though.