[digiKam-users] Confused by tick boxes in "Edit Metadata" + how does "Captions" interact?

[Gilles Caulier]

2018-09-16 17:39 GMT+02:00 Chris Green <cl at isbd.net>:

> This is all on Digikam 5.6 running in xubuntu 18.04.
>
> Firstly the tick-boxes in "Edit Metadata".  Each item you can edit has
> a tick box, what does it do?  Does it simply mean "you can change this
> item", does it mean that the item gets written to metadata when you
> click "Apply" or "OK", or what does it mean?
>

Checking a section enable change in metadata relevant when Apply is
pressed. That all.


>
> There are also the three extra tick boxes which I assume are the ones
> that copy metadata between Exif, IPTC and XMP.  However there is some
> confusion here too (for me anyway!), what is JFIF?


JPEG segment used to store comment and more. Look in wikipedia.

https://en.wikipedia.org/wiki/JPEG_File_Interchange_Format. This is not
Exif.

And yes, photo file format are puzzle...


> After some
> experimentation it seems that Exif Comment means Exif Caption and that
> when the 'sync' tick-box is ticked then whenever an item is *changed*
> then the corresponding other metadata is synchronised.  This can be a
> bit confusing if, for example, "Sync Exif Comment" is ticked for both
> XMP and IPTC.
>
> Also how does the "Captions" section of the sidebar interact with
> all the above?
>

When you change something in metadata editor, DK will scan the image
metadata and sync back the database.

This will sync the right sidebar tab.


>
>
> What would also be really, really useful would be a listing of which
> Exif, IPTC and XMP fields correspond to each field in the "Edit
> Metadata" section as this would clear up any ambiguity between
> "Comment", "Caption", "Description" and similar.  Either this or give
> the actual field names in the "Edit Metadata", e.g. you could put
>
>
In fact no. This tool try to simplify the complixity of reduntant metadat
tags in files, something like the file properties in Photoshop.


> Caption (Exif.Photo.UserComment):
>
>
>
> Finally (yes, I know there are lots of questions here) when changing
> an item does it get written to both database and image on both "Apply"
> and "Exit" if one has ticked all the boxes in "Write this information
> to the Metadata"?
>
> yes


Gilles Caulier
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