Alcatraz. D-Block. Isolation. This shot two attempts and damn near half an hour to take, purely because of people wandering in from the entrance (to the left of the shot, not visible), seeing I was trying to get a shot, and continuing to aimlessly wander into frame. Same with the door at the other end, but not as bad. There was another photographer who came in and stood near where I was, we were both going for similar shots. Probably spent 15mins in silent recognition and empathy with one another as people would see us, both lining up and then having to drop camera as they meandered in the way. Eventually, a moment came, and the bursting sound of two cameras was over in a matter of seconds. We looked at each other, silently smiled and nodded, and parted ways.