What is Sergey Mikhaylovich Prokudin-Gorsky best known for?
Sergey Prokudin-Gorsky
Sergey Mikhaylovich Prokudin-Gorsky (, ;  – September 27, 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.
Aleksandr Proshkin
Aleksandr Anatolyevich Proshkin (; born 25 March 1940) is a Russian film director and screenwriter. He has directed fourteen films since 1975. His 2009 film "The Miracle" was entered into the 31st Moscow International Film Festival.