Renowned Portrait Artist Brings Photo Exhibit to Richfield Springs By TED MEBUST RICHFIELD SPRINGS – After two years of living in Otsego County, Dmitri Kasterine, a photographer whose work hangs in both the Smithsonian and London’s National Portrait Gallery, is opening a free exhibit of his work to the surrounding community. Located at 1441 County Highway 23 in Richfield Springs, the event will feature a vast portrait collection from throughout the artist’s career—subjects ranging from Queen Elizabeth II to Jean…