Prior to the Lumiere brothers, Louis Ducos du Hauron utilized the separation technique to create colour images on paper with screen plates, producing natural colours through superimposition, which would become the foundation of all commercial colour photography. Descendants of photographer Antoine Lumiere, inventors Louis and Auguste Lumiere utilized Du Hauron's (1869) technique, which had already been improved upon by other inventors such as John Joly (1894) and James William McDonough (1896), making it possible to print photographic images in colour. The most broadly used form of colour photography in the early twentieth century, autochrome was cherished for its aesthetic appeal and uniqueness, which have also become its most recognizable characteristics.