I have a way of telling what actuation a raw file is. For example, Huntnphool's camera has 32866 actuations as of our sheep photo trip. If anyone wants to know how many their 20D has, you have to email me a raw file picture. If you want details about this, maybe I'll write it up some time. I did a lot of research and downloading of programs and finally figured it out. At this point about any Canon camera can be determined...