[digiKam-users] Digikam puts its "signature" in metadata even when no other changes - why?

[Maik Qualmann]

Ok, interesting discussion. If I look at the definition of Exiv2:

Exif.Image.ProcessingSoftware => The name and version of the software used to 
post-process the picture.

Would I understand it so that only with changes to the image data is a 
software entry. So I would suggest that only the image editor sets the 
software entries, but also the lossless JPEG rotation. Metadata changes write 
no digiKam software entrys.

Maik

Am Freitag, 21. September 2018, 13:28:04 CEST schrieb Stefan Müller:
> Also Digikam writes 'Digikam 5.9' into the metadata even when it
> hasn't changed anything else at all.
> totally agree, there should be some kind of differentiation 
> 
> 
> On 21.09.2018 13:12, Chris Green wrote:
> 
> Remco Viëtor <remco.vietor at wanadoo.fr> wrote:
> 
> On jeudi 20 septembre 2018 23:07:42 CEST Chris Green wrote:
> 
> woenx <marcpalaus at hotmail.com> wrote:
> 
> I don't know about the "signature", other software does the same thing.
> 
> Other software doing the same thing doesn't necessarily make it a good
> idea! :-)
> 
> 
> But it does allow the software to see what kind of fields can be expected in
> the metadata, and how to interpret them.
> 
> 
> Possibly, but how many programs are there out there that 'understand'
> how Digikam uses the metadata?
> 
> 
> 
> And if there's information about the processing,  the program and version
> that created that information is really needed to make sure any replay can
> be done correctly. Different programs, and sometimes even different
> versions, can use different algorithms or interpret parameters differently.
> No information about creating program/version would make storing processing
> info useless: no reliable way to reuse it, and it is not really
> human-readable (you see the numbers, but you'll have no idea what they
> mean).
> 
> 
> Yes, but in reality my images have been processed by several different
> programs.  Say I do major image enhancement/changes using Gimp or
> Photoshop, then some changes to metadata using Photini and then I use
> Digikam to manage the inmages.  Having 'Digikam 5.9' in the metadata
> would be totally misleading!
> 
> Also Digikam writes 'Digikam 5.9' into the metadata even when it
> hasn't changed anything else at all.