Cyanotype is a photographic printing process that produces a cyan-blue print.
Unlike photographs set in silver, like in black and white photography, cyanotypes are using a solution of iron compounds.
The photograph can be taken with a camera, and the resulting photo turned into a negative that can be used to make an image by contact print on handmade cyanotype paper.
The photographs on display were all taken by David and processed using the 19th-Century monochrome photographic printing method.
Each individual print is unique due to the changing of the uv light exposure period and application of chemicals during every printing process.