query: What is Sergey Mikhaylovich Prokudin-Gorsky best known for?
passage: Sergey Prokudin-Gorsky
Sergey Mikhaylovich Prokudin-Gorsky (Russian: Серге́й Миха́йлович Проку́дин-Го́рский, listen; August 30[O.S. August 18]1863– September27, 1944) was a Russian chemist and photographer. He is best known for his pioneering work in colour photography and his effort to document early 20th-century Russia.[1]
passage: Mikhail Roginsky
Mikhail Roginsky (; 14 August 1931 – 5 July 2004) was a Russian painter. Roginsky was one of the leaders of Soviet Nonconformist Art and the creator of the modern national visual method, with its laconic means and inner expressiveness.