Specific MakerNotes support for more camera vendors (like in exiftool)

[Reiner1959]

Hi all,

I came across a problem in rawtherapee regarding lens information with an exif 2.20 version in a leica M (Typ240) dng file. Rawtherapee uses exiv2 meanwhile.

In this older exifversion there is no LensMake and LensModel Tag. The only way to get the Lensinformation is via MakerNotes and LensType Tag. See Screenshot:

from https://exiftool.org/TagNames/Panasonic.html#Leica6

But this is not supported currently. I think the taglist at exiftool.org is a good starting point to support more specific MakerNotes.

Best regards Reiner