Maybe I am just ignorant of a fact that most of you already know, but I shot a soccer game today with D300 and once at home was looking through several CF cards to find those soccer pics while holding my D800 ( I had taken the card out of the D300 and put the camera body away and an hour later the D800 was just handy). I didn't see the soccer shots anywhere while going through all of my cards on the D800 and, after very diligent search, began to format a couple of cards that had obviously old, recorded photos....in doing so I deleted today's soccer game without EVER seeing them. They weren't visible via the D800. Do pics shot with one Nikon body remain invisible when viewed via another Nikon body? I think so.