Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!
All depends how the picture was saved, Photoshop save for web strips out all the EXIF data so the date you will get will be when the file was saved, not when the picture was taken in some case.
As said above it's all in the EXIF data and is sometimes stored but it's usually lost when the file is specifically compressed (as in the Photoshop like Rich says).
A good tool if you have Firefox is an add-on called Exif viewer.