Cyanotypes

Cyanotypes are created by treating paper with light-sensitive iron salts. This paper can then be exposed to the sun and its ultraviolet light to create an image.
~Greta Bahnemann

For Art Thursday, cyanotypes:

Indigo XII
by Kate Cordsen

Cystoseira fibrosa, 1843
by Anna Atkins

Fern, New Zealand, 1843
by Anna Atkins (from a book she self published by hand)

Cyanotype
photo by Thomas Smillie

Cassette
byThierry R

Want to try it yourself? Cyanotype prints for beginners