This afternoon I went out for a drive with my mate Nathan McKenna to get some photos of his 1200 ute as well as use my EOS 1 for some of the more tasteful shots. To my disappointment I found out this afternoon that my EOS 1 runs on a replaceable lithium battery which has decided to run out. But it's problems like this that make me happy to now have two camera body's, even if the 40D isn't full frame like the EOS 1.