[Digikam-users] re JPEG lossiness, PNG

[Dr. Martin Senftleben]

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Hi,

Am 14.01.2012 10:54, schrieb Remco Viëtor:
>> What puzzles me (is this a bug?) is that none of the tags which I
>> had saved with the raw file have been taken over by any of the
>> exported formats. It would be very difficult to create new images
>> from the raw file and again and again add the tags to the new
>> versions. Only the description and other exif data were taken
>> over - at least something.
> 
> I saw that as well, in that Digikam showed tags with the converted
> image, but tags and description were not stored in the image file
> itself. (and I have selected all but the last three options in the
> 'Settings/Metadata/Common metadata actions' section). To get that
> information in my png files, I used the menu-item 'Image/write
> metadata to image'. But I'm not sure if that works on a series of
> selected files.

How does this help in keeping metadata that is already stored in the
original file? Writing metadata to image works only on the metadata
that is available for that image. If digikam doesn't take over the
tags or descriptions from the raw file when saving an edited version
as png or jpg, all the data has to be reentered. That is my main
problem, particularly with tags, as I add some five to ten tags to
each file, and having to do this over and over again, is very cumbersome.

Regards
Martin
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