Taken the day I got the 7D. I didn't realise you should not really shoot at 1600 and in mixed tungsten-fluorescent light at night, at full aperture, of course. Unfair test! Since I was not aware that back focus existed at this time, all my images were in sharp focus. The moment someone mentioned back focus I started finding it. Recently in 2005 I have decided it does not exist. I never returned by 7D to be adjusted. I just will it to focus correctly.
