Lynn Saville photographs New York during the time of transition from daylight to night, the fleeting moments when natural light gives way to streetlight, moonlight, window light, and advertisement and surveillance lighting. Subdued tones and shadows reveal a geometry hidden beneath the visual distractions of daylight. Saville has sought out places that seem questionable—deserted factories, back alleys, the shadowy infrastructure of urban highways and bridges that suggest the city’s exoskeleton.