Have you ever downloaded a batch of digital photos off your camera only to discover that you’d accidentally set the clock wrong and the time on every photo was out by 12 hours, or you hadn’t noticed that the camera had reset itself and all your photos were claiming to have been taken in 2007?
Almost all digital cameras record and store various camera settings, scene information, date/time the photo was taken etc as Exchangeable Image File (EXIF) data within the image file. This information can be really useful when it comes to sorting or viewing your digital photos, providing you keep your camera date/time settings up to date.
EXIF Date Changer by Rellik Software is an application that can easily edit the EXIF data and correct your mistakes, either by adjusting the time by a certain number of days, hours, minutes and seconds or by setting the date to a specific date and time.
The difference between the free and pro versions is that the free supports only JPG and cannot be used for commercial use.
I find that a combination of EXIF Date Changer and Better File Rename safely gets me out of pretty much every situation.