Hello Bill,
you basically found the issue.
Instead of exiv2 I now used exiftool to check the exif info. And indeed there
is a difference with the Artist field.
Canon 6D:
The RAW shows
Artist : M. Bodenbinder
The xmp file contains
<dc:creator>
</dc:creator>
The GUI shows value "M. Bodenbinder"
Canon 20D:
no Artist in the RAW
The xmp file contains
<dc:creator>
</dc:creator>
The GUI says value "unknown"
Canon G9XII:
The RAW shows
Artist :
The xmp file contains no creator.
The GUI value for the creator is empty
Now it makes more sense what the GUI is showing.
The only question remaining is why the xmp file for the G9XII RAW does not
contain a <dc:creator> section. From the logic above it should contain at
least an empty section.
Matthias
Am 26.04.2018 um 18:02 schrieb William Ferguson:
> The creator field is set from the exif field Artist. I'm speculating that
> the 20D has an Artist field in the EXIF data and the G9 doesn't. You could
> check for the artist field with exiftool.
>
>
> Bill
>
> On Thu, Apr 26, 2018 at 11:45 AM, Matthias Bodenbinder
> <[email protected] <mailto:[email protected]>> wrote:
>
> Am 26.04.2018 um 11:31 schrieb Tobias Ellinghaus:
> > Am Dienstag, 24. April 2018, 07:06:38 CEST schrieb Matthias Bodenbinder:
> >> Am 23.04.2018 um 07:50 schrieb Matthias Bodenbinder:
> >>> Am 22.04.2018 um 12:26 schrieb Tobias Ellinghaus:
> >>>> Am Sonntag, 22. April 2018, 09:09:09 CEST schrieb Matthias
> Bodenbinder:
> >>>>> Am 22.04.2018 um 09:01 schrieb Matthias Bodenbinder:
> >>>>>> Hi,
> >>>>>>
> >>>>>> I just realized that since this year darktable is not setting the
> >>>>>> default
> >>>>>> "creator" for imported pictures anymore. I have set my name in the
> >>>>>> "creator to be applied when importing" field. And I actually never
> >>>>>> changed that. How can I debug this?
> >>>>>
> >>>>> I just found out that it is camera specific and not date specific.
> The
> >>>>> creator is always set for my Canon 6D. But not so for Canon 20D,
> Fuji
> >>>>> X100
> >>>>> and Canon G9X II.
> >>>>>
> >>>>> The Fuji and the G9X get a blank creator, while the Canon 20D gets
> >>>>> "unknown" creator. And this is true for several years now. But
> since I
> >>>>> mostly take pictures with my 6D I never realized it.
> >>>>>
> >>>>> Whats going wrong?
> >>>>
> >>>> Are any error messages shown when starting darktable from a terminal?
> >>>>
> >>>>> Matthias
> >>>>
> >>>> Tobias
> >>>
> >>> I did a full test for a Canon 6D picture (IMG_6691.CR2) and a Canon
> G9XII
> >>> picture (IMG_0627.CR2). I removed the pictures from the database and
> >>> deleted the XMP file. Then I ran "darktable -d all" and imported the
> >>> pictures again. The result is that the 6D XMP file contains>
> >>> <dc:creator>
> >>>
> >>> <rdf:Seq>
> >>>
> >>> <rdf:li>M. Bodenbinder</rdf:li>
> >>>
> >>> </rdf:Seq>
> >>>
> >>> </dc:creator>
> >>>
> >>> while the G9XII XMP has no such entry.
> >>>
> >>> I can not see any issues in the log files. I attached the logs and
> the xmp
> >>> files to this email. I hope somebody can shed some light on this.
> >>>
> >>> Matthias
> >>
> >> Another test: I removed ~/.config/darktable. Completely clean start.
> Same
> >> issue: &D files get a "creator" and G9XII files dont.
> >
> > Please use exiv2 on the raw file to see if it already contains the
> creator.
> > Maybe it's not the darktable settings at all that add it but it's just
> read
> > from whatever you have configured inside the camera?
> >
> > Tobias
> >
>
> There is no creator set:
>
> File name : /opt/Bilder/Fotos/2018/2018-04-22-G9X/IMG_0627.CR2
> File size : 25145174 Bytes
> MIME type : image/x-canon-cr2
> Image size : 5472 x 3648
> Camera make : Canon
> Camera model : Canon PowerShot G9 X Mark II
> Image timestamp : 2018:04:01 17:10:38
> Image number : 103-0627
> Exposure time : 1/8 s
> Aperture : F4
> Exposure bias : 0 EV
> Flash : No, compulsory
> Flash bias : 0 EV
> Focal length : 10.2 mm
> Subject distance: 0.6 m0.00 m0.00 m
> ISO speed : 500
> Exposure mode : Auto
> Metering mode : Multi-segment
> Macro mode : Off
> Image quality : RAW
> Exif Resolution : 5472 x 3648
> White balance : Auto
> Thumbnail : image/jpeg, 13638 Bytes
> Copyright :
> Exif comment :
>
>
> And if it would contain a creator, why would DT then show an empty
> creator in the GUI?
>
> And the interesting thing is also that for the G9XII the creator section
> in the xmp file does not exists, as mentioned. But for the 20D RAW the xmp
> file contains an empty section:
> <dc:creator>
> </dc:creator>
>
> And this is shown in the GUI as "unknown" creator. The correspondig 20D
> RAW fiel has similar exiv2 info:
>
> File name : /home/matthias/Bilder/opt-Bilder/Fotos/20D/_MG_4133.CR2
> File size : 7483554 Bytes
> MIME type : image/x-canon-cr2
> Image size : 3504 x 2336
> Camera make : Canon
> Camera model : Canon EOS 20D
> Image timestamp : 2014:10:07 14:03:12
> Image number :
> Exposure time : 1/200 s
> Aperture : F6.3
> Exposure bias : 0 EV
> Flash : No, compulsory
> Flash bias : 0 EV
> Focal length : 100.0 mm
> Subject distance: 0 m
> ISO speed : 400
> Exposure mode : Auto
> Metering mode : Multi-segment
> Macro mode : Off
> Image quality : RAW
> Exif Resolution : 1536 x 1024
> White balance : Auto
> Thumbnail : image/jpeg, 7664 Bytes
> Copyright :
> Exif comment :
>
>
>
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