What is a Cyanotype?
A cyanotype is a photographic process which results in a cyan coloured print. The process involves a combination of iron salts which are then exposed with Ultra Violet light. The surface for the print then needs to be washed in water oxidise to achieve the blue.
The process was developed in the 1800s and is still used today.
Explore the sources and images below to find out how cyanotypes can be used.