Manipulating Dates in EXIF

While fixing up my messy digital photo collection, I noticed that some photos had the wrong date when imported into f-spot. Probably due to wrong clocks on the cameras that took them or something like that.. Anyways, to fix them up I used exiv2 and changed Exif.Photo.DateTimeOriginal _and _Exif.Photo.DateTimeDigitized . Here's the lines I used:

exiv2 -M"set Exif.Photo.DateTimeOriginal 2006:06:24 11:49:00" -M"set Exif.Photo.DateTimeDigitized 2006:06:24 11:49:00"  *jpg