If you guys are having issues with the images being too big for the page, you might want to consider using "Lightbox Plus"
http://serennz.cool.ne.jp/sb/sp/lightbox/
Just replace lightbox.js with lightbox_plus.js in the header part of the albums.php page in the template set.
This will then show your full sized images shrunk to the size of the page first, and the user can choose to click a button in the top left of the image to see it full size.
Also of note, to get the "loading" animated gif to load in the center of the screen, put
text-align:left;
in the
#overlay{
area of zen.css
Works like a charm for me. Big thanks to Chili for the work!