I have two sets of pictures that have the wrong date stored. The date is stored as the file's modification time and the origination time in the EXIF metadata.

What can I do to correct these all? I don't want to do them individually, I just want to shift the time for a whole set forward/backward to adjust the error. One set of files is dated two hours ahead of what it should be and another set is a few years behind.

How's this?

quote:

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DirDate is a command line tool that can easily be automated to change files' last modification date, creation date or last access date. It can change dates using either a reference file (where you can 'lift' the date from an existing file), the current date/time or a series of YEAR, MONTH, DAY, HOUR, MIN, SEC and MSEC commands. It can process files in subfolders, and it has a preview mode so that you can see which files will be modified.

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That's the kind of program I'm looking for . I want to adjust the exif date as well (and keep all other data at the same time). I found some other programs on that site that edit exif, but they dont do automatic adjustment of multiple files.

I found a way to do it:
http://www.stevesforums.com/forums/view_topic.php?id=62215&forum_id=31

I also realised that the file creation and modification date aren't very important. The creation date reflects when I transferred it to my computer, and the modification date will be changed if I rotate the pictures. The exif date is what should be used (and that's why how it was designed).