Kodachrome is a brand of color reversal (slide) film sold by Kodak. Kodachrome was invented by Leopold Godowsky, Jr. and Leopold Mannes (hence the humorous saying that "Kodachrome was made by God and Man") http://www.invent.org/hall_of_fame/233.html Leopold Godowsky, Jr. on invent.org's Hall of Famehttp://www.invent.org/hall_of_fame/223.html Leopold Mannes on invent.org's Hall of Fame. It was first sold as 16 mm movie film in 1935, and as 8 mm movie film and 135 film in 1936.