XnView Software

If one modifies a group of photos using "Tools->Metadata->Edit IPTC/XMP". and sets the create date/time from Exif date/time taken, it is set incorrectly.

Select a group of photos
Select "Tools->Metadata->Edit IPTC/XMP" from menu
Click on the "Date/Time" tab
Click on the radio button and select "EXIF Date/Time Taken (if exists)" for "Created date/time"
Click on the "Date/Time" tab
Click on the radio button and select "EXIF Date/Time Taken (if exists)" for "Released date/time"
Click on "Save All"

Results in:

IPTC tab: Origin / Released Date/Time: correct
XMP tab: xmpDM / releaseDate: correct

BUT... (as shown in the Info pane...)

IPTC tab: Origin / Created date is NOT CORRECT
The date seems to be set to the date taken of the 1st photo in the group
IPTC tab: Origin / Created time is NOT CORRECT
The time is set to 00:00:00

XMP tab: photoshop / DateCreated is NOT CORRECT:
It seems to be set to the date taken of the 1st photo in the group

ExifTool tab: IPTC / Date Created is NOT CORRECT
The date seems to be set to the date taken of the 1st photo in the group
ExifTool tab: IPTC / Time Created is NOT CORRECT
The time is set to 00:00:00

ExifTool tab: XMP / Date Created is NOT CORRECT
It seems to be set to the date taken of the 1st photo in the group

ExifTool tab: Composite / Date/Time created is NOT CORRECT
The date seems to be set to the date taken of the 1st photo in the group
The time is set to 00:00:00

[The ExifTool tab XMP and IPTC date/time entries seem to be the same as the date/time entries in the XMP and IPTC tabs,
so if the XMP and IPTC tabs' date/time problems are solved, this may fix the ExifTool tab entries as well...]

-Scott

Please check XnViewMP 0.48