Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ferric ammonium citrate and potassium ferricyanide.
It is a completely manual process and is revealed with sunlight.
Important:Each copy is unique, texture and color may vary.
Each photograph is taken on 250 gr paper. Fabriano