Finally got my new galleries up. If the image has EXIF data, which all of mine do, you can see the data by rolling over the "Image Data" tab at the top left of the image.
I used the PEL PHP library ( http://pel.sourceforge.net/ ) to extract the data from the image and store it in the "images" database table. If the image doesn't have the EXIF data, it doesn't matter.
I modifed the code in several places and when I'm sure it's housebroken, I'll see what needs to be done to merge it in if everybody thinks it's worthwhile.
The galleries aren't real design efforts, I was just getting the functionality down.