Headed for the Woodbridge Road Preserve right after work hoping to get some color in the sky for fly-in photos. The cloud bank to the west obscured Mt. Diablo and the sunlight. Very disappointing with less than 100 cranes coming in to roost. And the darkness forced me to use a 2500-3200 ISO which added excess 'noise' to the photos. Not a great evening, but did get to meet a friendly couple from Davis, Dave and Jeanette.