Still feeling very precious about my shiny new 5D, I was alarmed to the point of needing months of psychotherapy to see that Michael Reichmann had posted a letter on his site from someone who is apparently a big cheese in the digi world, pointing out what the author considers to be a 'a serious design flaw in the new Canon 5D'. Trembling with dread, I read on, expecting to learn that the focussing system would zap lasers into my eye and fry my retina. However, it amounts to this. Assume you have saved some settings in the 'C' mode and are shooting in that mode. While shooting, you adjust (say) the aperture from the one you have saved in 'C' mode. You stop shooting, and after the user-defined period the camera nods off to sleep. When you reactivate it by pressing the trigger, it reverts back to the 'saved' C settings rather than the adjusted one you left it at before it went to sleep. That's it. You can read it for yourself at http://luminous-landscape.com/essays/5d-gotcha.shtml As for me, I think I need a lie down.