[digikam] [Bug 354232] New: Lens information is always "unavailable" for Pentax K-S1 images

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https://bugs.kde.org/show_bug.cgi?id=354232

            Bug ID: 354232
           Summary: Lens information is always "unavailable" for Pentax
                    K-S1 images
           Product: digikam
           Version: unspecified
          Platform: Kubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Metadata
          Assignee: [hidden email]
          Reporter: [hidden email]

Images taken with Pentax K-S1 miss lens type information in both Photograph
Properties and Lens Auto-Correction module in Image Editor.
exiv2 reports it correctly:
$ exiv2 -pt IMGP0553.JPG | grep -i lenstype
Exif.PentaxDng.LensType                      Byte        4  smc PENTAX-DA 35mm
F2.4 AL


Reproducible: Always

Steps to Reproduce:
1. Click on image
2. Check 'Photograph Properties'

Actual Results:  
Lens is reported as 'unavailable'

Expected Results:  
Lens should be reported as evix2 reports.

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
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--- Comment #1 from Gilles Caulier <[hidden email]> ---
Which digiKam and lensfun versions you use ? Go to Help/Components Info for
details.

Giles Caulier

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Metadata                    |Lens Distortion
            Product|digikam                     |digikamimageplugins

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--- Comment #2 from Piotr Ryszkiewicz <[hidden email]> ---
Digikam 4.14.0
LibExiv2 0.25
LibLensFun 0.3.1-0
I added camera info into slr-pentax.xml, as it was missing there. Since then
Auto-Correction recognizes camera, but not lens type.
I am not sure, that this is LensFun problem, as lens info is missing from
general Photograph Properties in main window as well.

Piotr

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--- Comment #3 from Gilles Caulier <[hidden email]> ---
The Lens type is read by Exiv2 from Exif. So the problem can come from this
library

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--- Comment #4 from Piotr Ryszkiewicz <[hidden email]> ---
Well. that's possible. But if so, why exiv2 reports it correctly ?

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           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Lens Distortion             |Tool-LensDistortion
            Product|digikamimageplugins         |digikam

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Olaf <[hidden email]> changed:

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--- Comment #5 from Olaf <[hidden email]> ---
I also have this problem. My camera is a Pentax K-30. The lens information is
"not available". Hovever, the lens type is shown in the Manufacturer Notes. But
since the Lens Auto-correction module does not use this information and I can´t
search or filter according this information, it has no great use for me.

Is it possible to copy the information from the the Manufacturer Notes to a
perhaps more standard-conform EXIF field in the database?

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--- Comment #6 from [hidden email] ---
Olaf,

Sound like a missing feature about Pentax camera in Exiv2 shared lib, dedicated
to read metadata from file. Version 0.26 will fix probably the problem :

http://dev.exiv2.org/versions/52

But it's not yet released.

Just to be sure, can you check with next digiKam 5.4.0 AppImage bundle for
Linux to see if problem is reproducible. Note : Exiv2 0.25 is used inside...

https://drive.google.com/open?id=0BzeiVr-byqt5Y0tIRWVWelRJenM

Gilles Caulier

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[hidden email] changed:

           What    |Removed                     |Added
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            Version|unspecified                 |4.14.0

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Maik Qualmann <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Version Fixed In|                            |5.4.0
         Resolution|---                         |FIXED
      Latest Commit|                            |http://commits.kde.org/digi
                   |                            |kam/15f323c4908e1c47201090d
                   |                            |378e8ad4304e21e91
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #7 from Maik Qualmann <[hidden email]> ---
Git commit 15f323c4908e1c47201090d378e8ad4304e21e91 by Maik Qualmann.
Committed on 22/11/2016 at 18:16.
Pushed by mqualmann into branch 'master'.

add Pentax lens type Makernote
FIXED-IN: 5.4.0

M  +2    -1    NEWS
M  +1    -0    libs/dmetadata/dmetadata.cpp

http://commits.kde.org/digikam/15f323c4908e1c47201090d378e8ad4304e21e91

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Maik Qualmann <[hidden email]> changed:

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--- Comment #8 from Maik Qualmann <[hidden email]> ---
Note: This requires a rereading of the metadata from the images.

Maik

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--- Comment #9 from Olaf <[hidden email]> ---
Hello Gilles,
I tried to start digikam-5.4.0-01-x86-64.appimage, but it shows only the
splashscreen and terminates with this message:

D/tmp/.mount_RzL9Xq/AppRun: Zeile 37:  2288 Speicherzugriffsfehler
(Speicherabzug geschrieben) digikam.wrapper $@
olaf@olaf-iMac:~/Downloads$

Seicherzugriffsfehler "memory access fault"?  Sorry, German error message...

I keep on trying.

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--- Comment #10 from [hidden email] ---
I just download the last 5.4.0 AppImage bunble and it do not crash here...

Gilles Caulier

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--- Comment #11 from Olaf <[hidden email]> ---

It worked with the Win64.exe with Windows 10 in a virtual box- the lens ist
shown.
It did not work with the x86-64.appimage with clean install of Kubuntu 16.04 in
a virtual box. Digikam 5.4.0 starts, but the lens type is "not available".

Olaf

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