EXIF and RAW

Hi all,

I am using an older version of Digikam, version 0.8.2-rc1, as package with my
Kubuntu distribution.  I have two questions:

- Is there any way to coerce digikam to read the EXIF information for the RAW
files?  I have compiled the latest version of exiv2 and have that available,
but no luck reading the EXIF with digikam.  I would prefer to hold off until
the next release of Kubuntu to get a later version of digikam, so as to not
have to try to compile digikam...

- When importing images from my CF card, only *.CRW files get transferred.  
None of the *.THM files generated by the camera get transferred.  Since these
files are generated by the camera, I think of them as part of the "digital
negative".  Are they not needed for anything?

Thanks in advance!

Paul
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[Gilles Caulier-2]

Le Mardi 31 Octobre 2006 19:09, Paul Waldo a écrit :

> Hi all,
>
> I am using an older version of Digikam, version 0.8.2-rc1, as package with
> my Kubuntu distribution.  I have two questions:
>
> - Is there any way to coerce digikam to read the EXIF information for the
> RAW files?  I have compiled the latest version of exiv2 and have that
> available, but no luck reading the EXIF with digikam.  I would prefer to
> hold off until the next release of Kubuntu to get a later version of
> digikam, so as to not have to try to compile digikam...

no way, sorry... This is releavant of old  libexif witch cannot read Exif from
RAW.

digiKam 0.9.0 use exiv2 library now instead libexif.

>
> - When importing images from my CF card, only *.CRW files get transferred.
> None of the *.THM files generated by the camera get transferred.  Since
> these files are generated by the camera, I think of them as part of the
> "digital negative".  Are they not needed for anything?

These problems have been fixed in digiKam 0.9.0

Gilles
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On Tuesday 31 October 2006 1:44 pm, Caulier Gilles wrote:

> Le Mardi 31 Octobre 2006 19:09, Paul Waldo a écrit :
> > Hi all,
> >
> > I am using an older version of Digikam, version 0.8.2-rc1, as package
> > with my Kubuntu distribution.  I have two questions:
> >
> > - Is there any way to coerce digikam to read the EXIF information for the
> > RAW files?  I have compiled the latest version of exiv2 and have that
> > available, but no luck reading the EXIF with digikam.  I would prefer to
> > hold off until the next release of Kubuntu to get a later version of
> > digikam, so as to not have to try to compile digikam...
>
> no way, sorry... This is releavant of old  libexif witch cannot read Exif
> from RAW.
>
> digiKam 0.9.0 use exiv2 library now instead libexif.
>
> > - When importing images from my CF card, only *.CRW files get
> > transferred. None of the *.THM files generated by the camera get
> > transferred.  Since these files are generated by the camera, I think of
> > them as part of the "digital negative".  Are they not needed for
> > anything?
>
> These problems have been fixed in digiKam 0.9.0
>
> Gilles

Thanks for the reply!  I guess I'll have to get the sources and compile...

Paul
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[Thorsten Schnebeck-3]

Am Dienstag 31 Oktober 2006 19:09 schrieb Paul Waldo:

> - When importing images from my CF card, only *.CRW files get transferred.
> None of the *.THM files generated by the camera get transferred.  Since
> these files are generated by the camera, I think of them as part of the
> "digital negative".  Are they not needed for anything?

Not really. THM are small jpeg thumbnails of the raw image. But a much larger
jpg thumbnail is also embedded into the rawfile. The metatags of raw and THM
are nearly the same.  So, no need to collect the THM files.

HTH

  Thorsten

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[Gilles Caulier-2]

Le Mardi 31 Octobre 2006 21:19, Thorsten Schnebeck a écrit :

> Am Dienstag 31 Oktober 2006 19:09 schrieb Paul Waldo:
> > - When importing images from my CF card, only *.CRW files get
> > transferred. None of the *.THM files generated by the camera get
> > transferred.  Since these files are generated by the camera, I think of
> > them as part of the "digital negative".  Are they not needed for
> > anything?
>
> Not really. THM are small jpeg thumbnails of the raw image. But a much
> larger jpg thumbnail is also embedded into the rawfile. The metatags of raw
> and THM are nearly the same.  So, no need to collect the THM files.
>

The only thing than digiKam does with *.thm files from camera is to get the
image from this file to render preview in camera interface. It's very fast.

If your camera don't provide *.thm files, a raw file preview extraction is
used instead.

Gilles
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