1. Cyanotype
Sunprint

2. Cyanotype is a photographic printing process that produces a cyan-blue print.

3. It was discovered by The English scientist and astronomer Sir John Herschel in 1842.
He mainly used it for reproducing notes and diagrams, as in blueprints.

4. Anna Atkins
Anna Atkins created a series of cyanotype limited-edition books that documented ferns and other plant life from her extensive seaweed collection.
She placed specimens directly onto coated paper allowing the action of light to create a silhouette effect. By using this photogram process, Anna Atkins is sometimes considered the first female photographer.

5. Fern
Seaweed

6. Cyanotype by Anna Atkins
Fern
Seaweed

7. Numerous contemporary artists employ the cyanotype process in their art: Christian Marclay, Marco Breuer, Kate Cordsen, Hugh Scott-Douglas and WuChi-Tsung.

8. WuChi-Tsung

9. Hugh Scott-Douglas

10. Kate Cordsen

11. Christian Marclay

12. Marco Breuer

13. What do we need to make it
Cyanotype is a traditional alternative photographic process that requires:
treated paper ( by two chemicals: ammonium iron citrate and potassium ferricyanide),
objects,
the sun,
- water
to produce a cyan-blue print.

14. Using giometric patterns