Hi everyone,
I am using Digikam to manage my pictures, and more specifically to add some tags - so I can easily find some pictures. My Digikam instance is configured to manipulate Exif, XMP, … with exiftool
I noticed that when I add a tag to a picture, several Metadata are changed, and I don’t understand why.
For example, for a picture to which I added the Subject Party:
|
|
|----|
| Original | Updated | |
|---|---|---|
| Composite:HyperfocalDistance | 3.22 m | 3.24 m |
| undefined | ---- | ---- |
| Composite:ScaleFactor35efl | 4.4 | 4.3 |
| undefined | ---- | ---- |
| ExifIFD:BrightnessValue | -5.454663662 | -5.454663633 |
| undefined | ---- | ---- |
| ExifIFD:ComponentsConfiguration | Y, Cb, Cr, - | |
| undefined | ---- | ---- |
| ExifIFD:FlashpixVersion | 100 | |
| undefined | ---- | ---- |
| ExifIFD:LensInfo | 2.220000029-5.960000038mm f/1.6-2.2 | 2.220000029-5.96mm f/1.6-2.2 |
| undefined | ---- | ---- |
| IFD0:YCbCrPositioning | Centered | |
| undefined | ---- | ---- |
| QuickTime:MediaDataSize | 1774314 | 1772898 |
| undefined | ---- | ---- |
| System:FileModifyDate | 2025:08:19 21:02:43+02:00 | 2025:08:21 18:11:09+02:00 |
| undefined | ---- | ---- |
| System:FileName | IMG_2437_2.HEIC | IMG_2437.HEIC |
| undefined | ---- | ---- |
| System:FileSize | 1810 kB | 1809 kB |
| undefined | ---- | ---- |
| XMP-dc:Subject | Party | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionAppliedToDimensionsH | 3024 | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionAppliedToDimensionsUnit | pixel | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionAppliedToDimensionsW | 4032 | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionAreaH | 0.142523383 | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionAreaUnit | normalized | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionAreaW | 0.106892535 | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionAreaX | 0.853608981 | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionAreaY | 0.546550853 | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionExtensionsAngleInfoRoll | 370 | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionExtensionsAngleInfoYaw | -41 | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionExtensionsConfidenceLevel | 0 | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionExtensionsFaceID | 1 | |
| undefined | ---- | ---- |
| XMP-mwg-rs:RegionType | Face | |
| undefined | ---- | ---- |
Why are all those tags updated ?
Is there a configuration in Digikam to stop it from updating those ?
Thank you in advance for your help on understanding this !
Nice day,
C