Think about the photo before and after, never during. The secret is to take your time. You mustn't go too fast. The subject must forget about you. Then, however, you must be very quick.
Henri Cartier-Bresson
I was at the park this morning when a swam practically came right up to me. I took a gazzillion shots, but none of them were half as good as this one. Must be the difference between British and U.S. swans 'cause it can't be me or my camera. Excellent shot by the way.