Gray Sky Imaging is headquartered in Rochester, New York where long winters are a part of life—something we are well accustomed. Trees in winter represent patience and a promise of the coming spring, where our gray world is transformed to abounding color. The international standard of daylight, D65, is based on Rochester’s 200 cloudy days every year. Photographers, bring your cameras and gray card for natural diffuse lighting! You won’t be disappointed.