British colour negative stock (1935–1960s) using screen-plate technique — remarkably warm, colour-stable, but visible grain. Archival value; rarely shot today.
Dufaycolor was a British additive screen color process from the 1930s to the 1960s. Microscopically fine color filters in red, green, and blue were applied directly to the film—without separate color layers as in Technicolor. The light was reassembled through this filter structure during exposure and projection.
Dufaycolor delivered warm colors with high saturation, especially in reds and skin tones. Archival material from the 1940s and early 1950s shows its characteristic warm patina—atmospheric, but not naturalistic. The disadvantage: visible graininess even at moderate film speeds. The screen pattern caused a fine mesh when enlarged. Therefore, Dufaycolor was used for documentaries and low-budget productions, while high-quality films relied on Technicolor.
For digitization, Dufaycolor requires specialized scanners that correctly interpolate the screen process. Its color stability surpasses many Eastmancolor materials—the pigments last longer. Standard digitization of Dufaycolor negatives leads to optical losses. Collectors and restorers value preserved material as rare film historical documents.