* Horst Brückner <h...@ec-logic.com> [02-08-20 13:28]:
> On 08.02.20 17:24, Patrick Shanahan wrote:
> > * Horst Brückner <h...@ec-logic.com> [02-08-20 11:21]:
> >> Dear list,
> >>
> >> i just got a new lens for my Canon 750D. Darktable 3.0 under Ubuntu
> >> 18.04 does not detect the lens (shown as (368)).
> >>
> >> The exiv2 utility reports:
> >>
> >> exiv2 -pt IMG_9283.CR2 | grep -ai lens
> >> Exif.CanonCs.LensType                        Short       1  (368)
> >> Exif.CanonCs.Lens                            Short       3  17.0 - 70.0 mm
> >> Exif.Canon.LensModel                         Ascii      74  17-70mm
> >> F2.8-4 DC MACRO OS HSM | Contemporary 013
> >> Exif.Photo.LensSpecification                 Rational    4  17/1 70/1
> >> 0/1 0/1
> >> Exif.Photo.LensModel                         Ascii      50  17-70mm
> >> F2.8-4 DC MACRO OS HSM | Contemporary 013
> >> Exif.Photo.LensSerialNumber                  Ascii      11  0000000000
> >>
> >> Do you have any idea how to make darktable detect the lens?
> >
> > iianm, dt relies on lensfun to provide that.  Have you tried updating your
> > lensfun db, on my openSUSE it is lensfun-update-data.
> >
> >
> > darktable git578.1a7019ebc on openSUSE Tumbleweed.
> >
> I tried the lensfun update (now is 0.3.2) - for me that looks like a
> silly tagging issue with the lens naming ('F2.8-4 DC MACRO OS HSM |
> Contemporary 013'). Any more ideas?

it is possible to make your own entries to match your lense but I do not
recall the exact procedure.  You might search for "darktable lensfun edit"
or something similar.

there is also:
https://www.darktable.org/2015/02/on-lens-detection-and-correction/

also:
man lensfun***

you can have your own lensfun data in addition to the regular.
   
-- 
(paka)Patrick Shanahan       Plainfield, Indiana, USA          @ptilopteri
http://en.opensuse.org    openSUSE Community Member    facebook/ptilopteri
Photos: http://wahoo.no-ip.org/piwigo               paka @ IRCnet freenode
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