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24th September marks this year’s World Cyanotype Day – an international initiative honouring one of the very first photographic processes.
PlanetHeroines22nd September 2022
Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple and low-cost process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ferric ammonium citrate and potassium ferricyanide.
Discover the women in photography who revolutionised the practice and the photographers keeping the practice at the cutting edge.