Empty field

[omimet at free.fr]

Correction !!!
The empty field value is well proposed in the listbox of the Advanced Search Tool, and work well when checked in my request number 3.
Only the missing EXIF "Make" field (with or without EXIF section) doesn't appear in the listbox... with relevant images which can't be filtered

On 16/11/2025 10:15, olivier mimet <omimet at free.fr> wrote:
> To go deeper into how Advanced Search Tool can help me in my quest of 
> empty field, I built a test album with 4 elements in order to make some 
> tests :
> 
> 1. Image with EXIF section, and field "Make"="NIKON" (from DSLR)
> 2. Image with EXIF section, and "Make"=null (from ExifTool)
> 3. Image with EXIF section, but "Make" missing (saved from SMS/MMS by 
> smartphone)
> 4. Image without EXIF section (build from scratch by GIMP)
> 
> I tried a lot of requests all based on the EXIF field "Make" (the 
> manufacturer of the camera) and, at this step, it seems to me so strange...
> 
> 1. Searching for the only album name => 4 images (as expected)
> 2. Searching for NIKON (second criteria in the main group : Photograph 
> Information/The manufacturer of the camera) => 1 image (as expected)
> 3. Searching for all cases in the proposed listbox of Make criteria => 1 
> image (versus 3 expected)
> 4. excluding NIKON  by adding a second search group with options 
> AND/"None of these conditions are completed" and criteria "Make"=NIKON 
> => 1 image (versus 3 expected !!!)
> 
> What seems to me "out of MY sens" is that the case "Make = nothing" is 
> not proposed in the relevant listbox of search number 3, while it is 
> automatically excluded by the search number 4, WITHOUT ANY REQUEST FOR 
> THAT (assuming I'd tick only fulfilled field values...) ...!
> 
> my questions :
> 
> - is this the way of working wanted for Digikam?
> 
> - if yes, how can I exclude the empty "Make" field values of my search 
> (I never succeed in my attempts...)?
> 
> 
> Hope my explanations (and my English) are clear enough!
> 
> Olivier
> 
> 
>