I´ve seen the "green flash" once or twice, but never had my gear ready when it happened. This time however, I was at Tylösand beach on the swedish west coast, shooting archive images for my image bank, when the sun set. The green flash occurs on rare occations due to a number of different atmospheric reasons and happens when the sun is just about to disappear, or when it just breaks the horizon at dawn. For a second or two, a distinct green light can be seen on top of the sun. This time, with my long "soccer lens" pointed at the setting sun, I got lucky!