Just a heads up... About 2007 I used the copy of Canon Photostitch to create some panoramas. In 2012 after completing a trip to my dismay on MacOS10.5 my copy of Photostich no longer worked. I looked all over the internet for updates and in all most all of the cases they have been removed except for one place. I don't know if Canon still supports this software or not. I've not tested on Snow Leopard (my MBP), but it works like a champ on 10.5. For instillation it asked for my original install or my Canon Software CD. I'm still playing with Hugin to get a result I like, but Photostitch works wonderfully without having to make bunches of adjustments and control points.