[Digikam-devel] Image Metadata extraction : implementation progress...

[Caulier Gilles]

Le Jeudi 02 Mars 2006 08:52 PM, Rainer Krienke a écrit :
> Am Donnerstag, 2. März 2006 20:37 schrieb Gilles Caulier:
> > > In the simple EXIF display I found at least for Nikon the Aperture
> > > value is missing. This should be included in this view. I remember that
> > > Nikon is special here. They encode this value non standard in the
> > > "Aperture" tag and not in the  "Aperture Value" tag like other
> > > manufacturaers like Canon do.
> >
> > Well, this tag is certainly un-recognized in marker note area by Exiv2. I
> > just get the info from Exiv2. I don't parse anything in digiKam.
> >
> > The better way is to report this problem to Exiv2 team.
>
> Well the Tag is echoed if I simply call exiv2 on a Nikon camera photo:
>
> $ exiv2 dsc_1376.jp
> Filename        : dsc_1376.jpg
> Filesize        : 1288537 Bytes
> Camera make     : NIKON CORPORATION
> Camera model    : NIKON D70
> Image timestamp : 2006:03:02 19:33:37
> Image number    :
> Exposure time   : 1/1500 s
> Aperture        : F4.8
> Exposure bias   : +1/2
> ....
>
> So the Tag Aperture is there. Its also shown in the "Full" EXIF view but
> there its called FNumber (don't know why).  Or do I miss something? On what
> does the difference depend what tags are shown in "Simple" and what are
> shown in "Full"?  Is this a property of exiv2 or of digikam?

There is no difference between Full and Simple mode. Any tags are just removed 
from the list.

The tag title are transformed to a more user friendly string by Exiv2. I 
suspect a problem into this transformation. I will investigate anymore.

Gilles