About Changing EXIF Timestamp Information

The time and date that your digital pictures are taken is stored inside each picture file in a "meta-data" block called the EXIF meta-data block.

Amongst other things, this information is used by photo management software including Apple's iPhoto and Aperture.

Photo Date Changer can read this type of information in many different picture file formats.

More information about EXIF support in Photo Date Changer is available on this page.

There are a few situations where it can be desirable to change the EXIF timestamp (the time and date your pictures were taken) of existing photographs after they have been taken.

Chief of amongst these are:

• the time and date was not set correctly on the camera
• the pictures were taken in a different time zone
• you have used two or more digital cameras and their clocks were not properly synchronized

As a consequence, your pictures may not sort correctly in photo management software such as iPhoto, Aperture, Adobe Lightroom, etc.

In these situations, Photo Date Changer will let you change the timestamp of your photo files after the fact to correct the problem.

Unlike the other actions that Photo Date Changer performs, modifying the EXIF timestamp requires the program to modify the contents of the digital picture files.

This manipulation should not usually result in any data loss, but the potential for damaging the files and thus rendering them unreadable/ unusable is real.

We do not want you to lose any data as a result of changing the EXIF timestamps. We highly recommend that you use this feature only on copies of your photo files and keep a backup of the original files for maximum safety.

We, of course, don't want to unduly alarm you. Keeping backups of your original files is a best practice in any event and we are (at the time of this writing) unaware of any circumstances where data loss has or is likely to occur. Nonetheless the possibility exists and we want you to be aware of it before using the feature.