DrPsycho writes: "Saw this linked on memepool and it just blew me away. The Library of Congress website has an exhibition section which features the works of Russian photographer Sergei Prokudin-Gorskii (1863-1944). Yeah yeah. Big deal, you say... until you realize his original B&W glass-plate negatives were created using a clever RGB filter system which he used almost 100 years ago. A little modern "digichromatography" ... reapplication of the filtered colours and combining them into a composite colour image... allows for stunning full colour reproductions! Not bad, considering by how long it predates the release of Kodachrome colour slide film."