Besides seeing leopard cub at zoo and tiger cubs at safari park, a reason for this trip was to test out a new camera I had gotten three weeks prior and not used yet. It replaces the two cameras I had, which I traded in. I wanted to test the focus tracking on moving animals, which works extremely well. This cub ran full speed from the back to the front of the enclosure when he saw a keeper. Even with the shallow depth of field from shooting at f2.8, the camera kept the head sharp!