Which Canon bodies does Photo Mechanic accurately report shutter actuations for. I am planning to sell some bodies to do an upgrade, and want to make sure I know which I'm getting accurate counts for. The bodies I have are 1DMk2N, 1DMk2, 5D, and 20D bodies. I am pretty sure my 1DMk2Ns and 1DMk2s are good... the 5D is giving me a very low number... and I'm assuming it won't work with the 20D. The 1s are my biggest concern since they've been used the most. Thanks.