I’ve been to San Gregorio beach often enough to know the drill. You walk out on the bluffs two or three hours before sunset and shoot down across the beach towards the sun. The sun is still high enough to be out of the picture, but there is sparkle off the water and beachgoers in silhouette. This attractive combination of subject and lighting occurs only once in … well, actually, it’s every sunny day. Afternoon haze on a recent day added an extra measure of dream-like atmosphere.