Lets breakdown the command to get a better understanding what each part does. In my case, the calculation was a matter of subtracting 3 days from all the photos and the command to do this looks like the following: exiftool -AllDates-='0:0:3 0:0:0' -m /Volumes/LochLomond The command to use is relatively simple and the only complex thing you will have to do is calculate how many days, months, years, hours, minutes and seconds you need to add or subtract. The exiftool has no GUI (graphical user interface) and will need to be run in Terminal on a Mac or command line for Windows users. After a bit of Googling, I found an application called exiftool by Phil Harvey that allows the EXIF date/time stamp to be modified using a method in the documentation called “Shift”. EXIF information is so useful for cataloging when consumed by photo applications, whether it’s on my Synology or uploaded to Google Photos.ĭue to the high number of photos with incorrect date stamps, I needed a tool that will automate the correction process. I am such stickler for correct EXIF information, including geolocation wherever possible. When it came to the job of carrying out some image processing from RAW to JPEG, I noticed all of my photos EXIF dates were incorrect. This happened on my last holiday to Loch Lomond. Most of the time, I fail to ensure my camera settings are correct before I take the very first snap. My Fujifilm X100F camera only comes out of hibernation when I go on holiday.
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