Today is the feast day of Saint Gertrude of Nivelles, the patron saint of cats (yawn), who lived from 626 to 659 in Belgium. It is also the day of St. Patrick, apropos to which John Gossage has said that he has dealt with how to use green in his photographs. Mr. Gossage says that he has gotten guidance from Corot; here are some of his solutions.
Creative Camerawork 