Cyanotype

I've recently begun making cyanotype prints of some of my favorite images on watercolor paper. The cyanotype process is an antique print making technique which uses light sensitive iron salts in place of the more common silver gelatin. The cyanotype emulsion is hand painted on the paper, which is then sandwiched together with a negative and exposed to the sun for a minute to produce a contact print.  Development and fixing of the Prussian blue image is accomplished with a few minutes wash in slightly acidified water.