Cyanotype is one of the oldest photographic processes in existence. Invented by Sir John Herschel in 1842, it produces the characteristic Prussian blue images that generations of blueprints were built on. Anna Atkins used it to create the first photographically illustrated book in 1843. By rights, it should be a historical curiosity. Instead, cyanotype in 2026 is more widely … [Read more...] about Cyanotype in 2026: The Analog Revival That Won’t Quit