Franklin Prince Knott (1854-1930), the most famous American artist of autochromes. Demonstrating artistic talent at a young age, Franklin won scholarships to two Massachusetts schools and eventually made his way to Europe for further study, began to carve out a successful career as a painter of miniature portraits, then he began having eye trouble and his wife urged him to take up the new field of color photography. take up the new field of color photography. Born was initially like a hobby became, within a few years, a new career that brought Knott international fame. He started to work for the National Geographic and in 1927 he undertook a journey to the East, sending hundreds of color plates to the magazine.