This was one of those magical days when everything went right. The light, the wind. Everything except my trust in what the camera was telling me. It said both memory cards were full, but I couldn't conceive that that would be the case. I checked my menus, etc. and couldn't see anything wrong. So I decided that since the second card had never been used before, it needed to be formatted first. When I got home, I had over 10,000 shots and there was a 2500 shot gap in the number sequence, so that means I had deleted all the images on a full card, then filled it up again. That means I had taken over 12,000 shots in 4 hours!!