advanced search on EXIF field empty or not allocated

olivier mimet <[email protected]>
Newsgroups gmane.comp.kde.digikam.user
Message-ID <[email protected]>
Hi all,

My collection (#20.000 images) contains some media (~1500) with bad 
creation date (images received inside SMS -vs email- without EXIF data, 
and automatically tagged with the recording date  at postponed 
registration by the smartphone)

In order to make adjustments I need to filter those images, but didn't 
yet succeed using the Digikam advanced search (my criteria : all the 
images with one dedicated EXIF field - "camera manufacturer" by example 
- not allocated)

Is there a way to make such filtering (it seems to me that checking if a 
specific EXIF field is used or not is a very common concern...)?

My feed back : I thought at first that the N/A value (see attached 
screenshot) was the way, but without result...

Many thanks for your REX.

Olivier
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