SUMMARY I am planning to use digiKam alongside darktable and appreciate how I can group files by filename such that I can manage not only the derived jpgs but also keep the xmp sidecars of corresponding raw files updated. I have one issue though: In darktable I can "reject" files to sort them out. Darktable would then write a -1 rating to the sidecar xmp file, but digiKam simply shows those images as unrated just like images without a rating (or a 0 rating, I guess). It'd be great if digiKam could adopt the -1 for something like "rejected". OBSERVED RESULT - Cannot assign a -1 rating - Labels view does not permit to show/hide images with a -1 rating EXPECTED RESULT - Can assign a rejected/-1 rating - Labels view has "rejected", "no rating", 1 star, 2 stars, ...
*** This bug has been marked as a duplicate of bug 367896 ***
Note that Reject in digiKam use the XMP standard Red Pick Label (=1). Exmaple of JPEG file reject in digiKam : gilles@U22:~/Images/SALAGOU$ exiftool DSC08804.JPG ExifTool Version Number : 12.40 File Name : DSC08804.JPG Directory : . File Size : 11 MiB File Modification Date/Time : 2023:01:14 15:03:13+01:00 File Access Date/Time : 2023:01:14 15:03:13+01:00 File Inode Change Date/Time : 2023:01:14 15:03:13+01:00 File Permissions : -rwxrwxrwx File Type : JPEG File Type Extension : jpg MIME Type : image/jpeg Exif Byte Order : Little-endian (Intel, II) Make : SONY Camera Model Name : SLT-A77V Orientation : Horizontal (normal) X Resolution : 350 Y Resolution : 350 Resolution Unit : inches Software : SLT-A77V v1.07 Modify Date : 2021:11:09 16:33:44 Y Cb Cr Positioning : Co-sited Exposure Time : 1/400 F Number : 5.0 ISO : 100 Sensitivity Type : Recommended Exposure Index ... Lens Info : 17-50mm f/2.8 Lens Model : 17-50mm F2.8 PrintIM Version : 0300 Compression : JPEG (old-style) Image Description : Thumbnail Offset : 21154 Thumbnail Length : 8594 XMP Toolkit : XMP Core 4.4.0-Exiv2 Urgency : 0 (reserved) Date/Time Modified : 2021:11:09 16:33:44 Metadata Date : 2021:11:09 16:33:44 Pick Label : 1 <===========!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Color Label : 0 Current IPTC Digest : c03c5dd774911b3e3981fe80f7c102a1 Coded Character Set : UTF8 Date Created : 2021:11:09 Time Created : 16:33:44+00:00 MPF Version : 0100 Number Of Images : 2 MP Image Flags : Dependent child image MP Image Format : JPEG ...
Also in a workflow, Rating can have a different signification that rejected. You image rate because it's good for a typical work but it's rejected because it don't follow your current workflow. Both exist, else only Rating will be used. We use Pick Labels in digiKam with a Neural Network to check aesthetic quality. Rating in used in a different space. It's explained here : https://docs.digikam.org/en/maintenance_tools/maintenance_quality.html In other word, if you want to see the Rejected images tagged with digiKam in DarkTable, ask to DT team to implement the PickLabel metadata, not the inverse. Gilles Caulier