One of my lenses does not get recognized by DigiKam when processing the raw image. "Lens Model" just says "----". But if I open the same image with Raw Therapie, the lens is recognized correctly and the lens correction works as expected. So I was wondering why DigiKam can't do the same.

I took a look at the exif data on a console and I've found these two entries:

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Lens Model                      : ----
...
Lens ID                         : Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical


Why doesn't DigiKam use "Lens ID" if "Lens Model" is empty?