Sergei Mikhailovich Prokudin-Gorski (1863 - September 1944) was a Russian photographer who undertook several who photographic surveys during the final years of Tsarist Russia. He developed early techniques for taking colour photographs.
External links http://www.loc.gov/exhibits/empire/ http://www-2.cs.cmu.edu/~dellaert/aligned/ http://www.ummagurau.com/art/russia/