* Аl Воgnеr <[email protected]> [05-11-18 14:47]:
> $ cat /etc/issue
> Ubuntu 18.04 LTS
> 
> $ which exiv2
> /usr/local/bin/exiv2
> (so it is compiled by myself, and not the version from the distri,
> which is older)
> 
> exiv2 -V
> exiv2 0.26 001a00
> 
> $ darktable --version
> this is darktable 2.4.3
> copyright (c) 2009-2018 johannes hanika
> [email protected]
> 
> compile options:
>   bit depth is 64 bit
>   normal build
>   SSE2 optimized codepath enabled
>   OpenMP support enabled
>   OpenCL support enabled
>   Lua support enabled, API version 5.0.0
>   Colord support enabled
>   gPhoto2 support enabled
>   GraphicsMagick support enabled
>   OpenEXR support enabled
> 
> liblensfun-data-v1 0.3.2-4 
> 
> $ exiv2 -pa pentax.24-70.dng | grep -i lenstype
> Exif.PentaxDng.LensType                      Byte        4
> HD PENTAX-DFA 24-70mm F2.8 ED SDM WR
> 
> 
> exiftool -G -H -a pentax.24-70.dng | grep -i lens
> 
> [MakerNotes]    0x0000 Lens Type                       : HD PENTAX-D FA
> 24-70mm F2.8 ED SDM WR
> 
> [MakerNotes]    0x0001 Lens
> Type                       : HD PENTAX-D FA 24-70mm F2.8 ED SDM WR
> 
> [MakerNotes]    0x0000 Lens F Stops                    : 8.5
> 
> [MakerNotes]    0x0009 Lens Focal Length               : 70.0 mm
> 
> [Composite]          - Lens ID                         : HD PENTAX-D FA
> 24-70mm F2.8 ED SDM WR
> 
> Darktable shows on the left side:
> Lens Unknown (0x083e)
> 
> Lensfun says "Unknown" too.
> 
> So could it be, that dt uses another exiv2 in my system? I cannot find
> one.

I have: 
   lensfun-tools-0.3.2-39.5.x86_64
   liblensfun1-0.3.2-39.5.x86_64
   python3-lensfun-0.3.2-39.5.x86_64
   lensfun-data-0.3.2-39.5.noarch

and
   grep 24-70 /usr/share/lensfun/version_1/*-pentax.xml
has no output

I would guess lensfun does not contain data for your lense

put a raw image on a file share service for trial.  I will open it in my
dt (git-master) and see what lense correction is available.

      
-- 
(paka)Patrick Shanahan       Plainfield, Indiana, USA          @ptilopteri
http://en.opensuse.org    openSUSE Community Member    facebook/ptilopteri
Registered Linux User #207535                    @ http://linuxcounter.net
Photos: http://wahoo.no-ip.org/piwigo               paka @ IRCnet freenode
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