How to sync EXIF data and date information from iPhoto to original files and flickr I've recently started a process of scanning old photo albums. I had settled into a nice workflow scanning a few images at a time and using iPhoto to add descriptions and change the dates, thinking that checking the "modify original files" box as I did so would in fact modify the original files. Not so.

I uploaded my first album to Flickr (using the iPhoto share feature, too) and was disappointed that the hundreds of photos from the 90s all have a date of July 30, 2014. Checking the files, there's no EXIF information at all, and the date created/modified are of course still July 30, 2014.

So I have three questions and I suppose I'd be satisfied with an answer to any of them:


Is there any way to copy iPhoto date information down to the original file? I don't really want to put tens of hours of work into something not usable outside of iPhoto. I'd prefer this because I'm used to iPhoto now and use it for my modern pictures too
Is there a way to at least preserve the iPhoto date when sharing to flickr? I was surprised that the built-in share function didn't do so
Has anyone had any success doing a similar project with software other than iPhoto?
Thank you!
ExifTool is a perl script that will give you great power in altering Exif data in images: http://www.sno.phy.queensu.ca/~phil/exiftool/

It's also available through homebrew (http://brew.sh):

$ brew install exiftool

If you are at all okay with working in the terminal it is fairly easy to use (and very powerful if you are dealing with lots of images). There are instructions on the main exifTool page specifically for time/date shifting.