When we think of the past prior to the 1960s or so, we tend to picture it in black and white. Much of the visual media of this period - including still photographs to films to television - was rendered in shades of grey, making relatively recent history seem that much more distant and alien. But colour photography did exist in the first half of the 20th Century; just think of classic films like The Wizard of Oz, released in 1939. But if this technology existed, why wasn’t it more common? And who first figured out how to capture the world in full living colour? Well, prepare to go from sepia to technicolour like Dorothy as we dive into the fascinating - and surprisingly long - history of colour photography. Throughout the black-and-white photography era, people added colour to photographs and film by hand-tinting them with paint and ink. However, the development of true colour photography required a scientific understanding of how humans perceive colour. In 1850, German physicist Hermann von Helmholtz developed the trichromatic theory of vision, which postulated that the human eye contained three different kinds of light receptors - today known as cone cells - each sensitive to one of three colours: red, blue, and green. In 1861, English photographer Thomas Sutton, working with Scottish physicist James Clerk Maxwell, applied Helmholtz’s theories to create history’s first colour photograph. Sutton took three separate photographs of a tartan ribbon through a red, blue, and green filter, then converted these photographs into slides and projected them back through their respective filters, the three slides combining to create a full colour photograph. Though this image could not be fixed on a physical medium, Maxwell’s demonstration nonetheless pioneered the additive colour process, which would form the basis of colour photography for the next few decades. Shortly after Sutton’s experiment, French physicist... Author: Gilles Messier Editor: Daven Hiskey Producer: Caden Nielsen Host: Simon Whistler Sponsor: Incogni - Use code BRAINFOOD and get 60% off an annual plan using the link https://incogni.com/brainfood Learn more about your ad choices. Visit megaphone.fm/adchoices