Which date does photos app use?

mindquest

macrumors 6502
Original poster
Oct 25, 2009
336
61
Just trying to confirm which date (creation?, Modified?, EXIF?) on an image does photos app use when sorting and organizing images?
 

headlessmike

macrumors member
May 16, 2017
35
53
As far as I can tell it uses the modified date, which is annoying when I geotag photos and it changes the date to the moment when the geotag is applied rather than when the photo was taken. I usually then use the ExifTool command line utility to change the modified date to match the EXIF date.
 

mindquest

macrumors 6502
Original poster
Oct 25, 2009
336
61
As far as I can tell it uses the modified date, which is annoying when I geotag photos and it changes the date to the moment when the geotag is applied rather than when the photo was taken. I usually then use the ExifTool command line utility to change the modified date to match the EXIF date.
WOW, I was thinking it was the EXIF date or even the creation date but not the modified date. I have a ton of old pictures I am importing into Photos app which is why I asked.
 

headlessmike

macrumors member
May 16, 2017
35
53
I've just modified and geotagged a couple and they keep the date/time that the photo was taken.
Hmm, I'l need to try it again. I'm certain that it's not the EXIF date that Photos is using, but it could be that my geotagging app is changing the creation date.
 

mindquest

macrumors 6502
Original poster
Oct 25, 2009
336
61
Hmm, I'l need to try it again. I'm certain that it's not the EXIF date that Photos is using, but it could be that my geotagging app is changing the creation date.
The problem I am finding is there is no clear answer to this question when I am searching for it. Thanks for taking another look!
 

Dave Braine

macrumors 68040
Mar 19, 2008
3,668
231
Warrington, UK
So in your example do you think Photos app is using the EXIF date?
Given that EXIF data is:
EXIF is short for Exchangeable Image File, a format that is a standard for storing interchange information in digital photography image files using JPEG compression. Almost all new digital cameras use the EXIF annotation, storing information on the image such as shutter speed, exposure compensation, F number, what metering system was used, if a flash was used, ISO number, date and time the image was taken, whitebalance, auxiliary lenses that were used and resolution. Some images may even store GPS information so you can easily see where the images were taken!
then, yes.
 

mindquest

macrumors 6502
Original poster
Oct 25, 2009
336
61
Given that EXIF data is:

then, yes.
Thanks Dave! Now that i know it is the EXIF date i should be changing on old my old photos to make sure they are correct before adding them to Photos App. IT is crazy that this isn't clearly stated and many of of are trying to get old scanned pics into Photos.
 
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