Saul Leiter was perhaps the most interesting of the fifties color photographers in his use of form. One of the most effective gestures in Leiter’s work is to have great fields of undifferentiated dark or light, an overhanging canopy, say, or a snow drift, interrupted by gashes of color. He returned again and again to a small constellation of subjects: mirrors and glass, shadows and silhouettes, reflection, blur, fog, rain, snow, doors, buses, cars, fedoras. He was a virtuoso of shallow depth of field: certain sections of some of the photographs look as if they have been applied with a quick brush.