Digikam ignores sidecar info from Darktable

[Willem Ferguson]

I am a new user of Digikam, doing most of my image manipulation in
Darktable. As currently set up on my machine, the dk V5.6.0. AppImage
does not see the the Darktable sidecar files: the Darktable EXIF data
and image changes (e.g. cropping or contrast) are not shown when viewing
Canon CR2 files in Digikam. Is there a way of achieving this?

Kind regards,

Willem Ferguson

[AndriusWild]

I use darktable too. You won't be able to see changes made in darktable unless you exported to JPEG/whatever. However you should be able to see star ratings, keywords etc. if your digikam reads from sidecars

Sent from my Samsung Galaxy smartphone.

-------- Original message --------

From: Willem Ferguson <[hidden email]>

Date: 2017-09-01 9:14 AM (GMT-07:00)

To: digiKam - Home Manage your photographs as a professional with the power of open source <[hidden email]>

Subject: Digikam ignores sidecar info from Darktable

I am a new user of Digikam, doing most of my image manipulation in
Darktable. As currently set up on my machine, the dk V5.6.0. AppImage
does not see the the Darktable sidecar files: the Darktable EXIF data
and image changes (e.g. cropping or contrast) are not shown when viewing
Canon CR2 files in Digikam. Is there a way of achieving this?

Kind regards,

Willem Ferguson

[Remco Viëtor]

On vendredi 1 septembre 2017 17:14:31 CEST Willem Ferguson wrote:
> I am a new user of Digikam, doing most of my image manipulation in
> Darktable. As currently set up on my machine, the dk V5.6.0. AppImage
> does not see the the Darktable sidecar files: the Darktable EXIF data
> and image changes (e.g. cropping or contrast) are not shown when viewing
> Canon CR2 files in Digikam. Is there a way of achieving this?
>
> Kind regards,
>
> Willem Ferguson

And you will never see the changes you make in Darktable imported in Digikam
when it concerns image edits like contrast or cropping.
Digikam takes the image from the image files as is (using the embedded jpeg for
raw files), and cannot apply the edits you did in darktable. In addition, there
is no guarantee that Digikam could reproduce the image edits based on the
sidecar information, as that would require Digikam to use the same algorithms
as Darktable (including parameter ranges etc.)

Digikam does see and is able to read the Darktable sidecars, as both are in
the same format and follow the same naming convention (I use both darktable
and digikam, and only have one sidecar per raw file).

I'm not sure what you mean by 'Darktable EXIF data': the sidecars have only
XMP data in them, and for those, there are several schemas that can be used.
Because of that, it's always a bit tricky to use sidecar files to transmit
information between programs (and that's not what they are meant for anyway).
But they are basically xml files, so in theory you could transform them through
a script...

Remco