Hi All In usual last minute style I am heading out in an hour or so to pick up a second hand EOS used 20D body that I've got from a certain auction site. I'm picking it up in person so that I can test it first. My intended use? I've got a 40D and an arsenal of glass but need a backup body as I intend to start dabbling in weddings in the next year. My question? What sort of things would you guys recommend testing so that I can be reasonably happy that it's fully operational? I'm thinking, try a few lenses and a few cards in it, battery grip, multiframe bursts etc. Any other ideas that I haven't thought of? Cheers everyone for your help. I've tried to search this subject but no luck. So hopefully I've included enough keywords on here for someone else to find it i the future.