One of the joys of bouncing back and forth between DST and standard time is resetting the clocks on my cameras. This year I messed up with both of them mis-setting the dates when I attempted to adjust the time.
Had about 2 dozen images.
Tried making changes in Photos and Aperture, but neither touched the EXIF metadata. Wasted a couple of hours trying to get the command line app exiftool to work, with no success whatsoever.
A Better Finder Attributes came to the rescue. Was able to properly reset the creation, modification and EXIF dates to match the date the images were taken.
Even found an older version that worked with SnowLeopard. Found it very intuitive, no need to check the help file. As always make sure images are backed up before modifying them.
You can do up to 5 images at a time in the trial version. Saw nothing to lead me to believe that it would stop working after a few days. At $15 US, not a horrible price to pay if you have a whack of images that need fixing. Say an entire European trip where you forgot to reset to local time.