SUMMARY When modifying the exif original date, digikam does not write the change to the sidecar file. Nor is the change displayed in the metadata exif sidebar. STEPS TO REPRODUCE 1. In settings, make sure metadata is read and written to sidecar file. (Write to sidecar only) 2. For an image, with an existing sidecar file, modify the original exif date: Item -> Adjust Time & Date 3. Modify only the exif: original date (click Apply and close the dialog) OBSERVED RESULT 1. The Metadata [exif] sidebar still displays the old value for Date and Time (original) 2. The sidecar file still holds the old value for exif:DateTimeOriginal EXPECTED RESULT 1. The Metadata [exif] sidebar displays changed value for Date and Time (original) 2. The value for exif:DateTimeOriginal in the sidecar file is changed to the modified value OTHER INFORMATION Only when performing a Item -> Write Metadata to File, the expected results are achieved. SOFTWARE/OS VERSIONS Tested on Digikam built from sources: rev 56b92b644e3196373ecc656e3e9bb614ed193139 and on App image digikam-7.0.0-beta2-20200112T071518-x86-64.appimage Operating System: KDE neon 5.17 KDE Plasma Version: 5.17.5 KDE Frameworks Version: 5.66.0 Qt Version: 5.13.2 Kernel Version: 4.15.0-74-generic OS Type: 64-bit Processors: 4 × Intel® Core™ i7-7500U CPU @ 2.70GHz Memory: 15.4 GiB of RAM
You only write in XMP. An "Exif.Photo.DateTimeOriginal" does not exist in XMP. In this case you also have to select [x] XMP in the Time Adjust Tool. Then "Xmp.exif.DateTimeOriginal" is written. Maik
Ah, true. I missed that. Thanks for clarifying. But how come is actually changes when I do a "Item -> Write Metadata to File"? Maybe
The updated original date is always transferred to the database by the Time Adjust Tool. The function write metadata to the file always writes all metadata, i.e. EXIF, IPTC and XMP. Maik
Should not the update to the database (by the Time Adjust Tool) be reflected in the [left] Metadata sidebar?
Sorry, not left sidebar. I meant the right metadata sidebar in the comment above.
No, the metadata sidebar reflects the actual metadata in the image / sidecar. The date from the database can be found in the icon view below the thumbnail and is used for all DB queries. In principle it is the same as in the metadata. But a user who does not want to change his metadata has the option to change the date used in digiKam - until the next read of the metadata from the file. Maik
Okay, got it!