https://bugs.kde.org/show_bug.cgi?id=338533

--- Comment #21 from IWBR <iwannaber...@gmail.com> ---
I also checked the official EXIF documentation at
https://www.exif.org/Exif2-2.PDF to see what is the "official" purpose of each
exif tag.

DateTime 
The date and time of image creation.  In this standard it is the date and time
the  file was changed. 

DateTimeOriginal
The date and time when the original image data was generated.

DateTimeDigitized
The date and time when the image was stored as digital data. If, for example,
an image was captured by DSC and at the same time the file was recorded, then
the DateTimeOriginal and DateTimeDigitized will have the same contents.


So it is correct to use the DateTime as the last modification date, and
DateTimeOriginal as the original creation date of the picture.

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