We were sitting quietly on the shore of Lake Ndutu, Tanzania, watching a large herd of Wildebeest, when all of a sudden they started to stampede. We followed them off the beach and into the trees at a respectful distance. Suddenly a smaller herd could be seen charging up to join the larger mass. We found ourselves surrounded. The thunder of their hooves roared in our ears, as we sat watching their dance. By switching to Shutter Priority, which I have programed to be at 1/25 sec, and I dropping the ISO down to 200, I was able to capture a sense of the drama taking place in the tidal wave of panic that sped past us that afternoon.