I recently discovered that the file modification timestamps on some of my photographs (stored as JPG/JPEG files) do not match the timestamps stored in their Exif data. This is odd, because I never modified any of those photographs.
I want to find other photographs for which this has happened, so I can possibly determine the cause and prevent it from happening in the future.
To help me do this, please recommend software that can compare the file modification timestamps of a batch (~50,000) of JPG files with any of the Exif timestamps stored inside them. I prefer the software use the capture time (aka original time), but it can use any of the Exif timestamp fields.
The only other requirement is that the software be compatible with Windows.
Portable, gratis, open-source software is preferred, but none are requirements.