Educated as a chemist, Sergey Prokudin-Gorsky devoted himself to the development of early color photography. By taking rapid sequences of monochrome photos through different colored filters and overlaying them, he was able to reconstruct original color scenes. Around 1905, he set out to document the Russian Empire and went on to capture vivid portraits of a lost world—the nation on the eve of World War I and the coming Russian revolution. What did Tsar Nicholas II give him to aid in the project? Discuss
Source: The Free Dictionary