The quality of light at dusk and dawn often yields rich, warm results. But the window of opportunity -- when the balance between natural and artificial light is just right -- is usually very brief. To capture the full range of light, from the relatively bright sky to the deepest shadows, required four different exposures, which I later combined digitally. The final result is very close to what my eye saw, and I feel it reflects the reassuring, welcoming qualities designed into this healthcare facility.