Kitalong_Cyan

By: Anna Atkins This Cyanotype was created by Anna Akins, She became interested in the cyanotype process which produced images through so-called sun-printing. The object is placed on paper which has been treated with ferric ammonium citrate and potassium ferricyanide, after which it is exposed to sunlight and then washed in water, leading to the uncovered areas of the paper turning a dark blue. The process, known as blueprinting, was later used to reproduce architectural and engineering drawings, but Atkins chose to use it for what is considered to be the first work.  By: Christian Marclay