A platinum print or platinotype is a photographic print made by a printing process that leaves platinum metal on the surface of the paper. Platinum prints are noted for their large tonal range and for
Coming Home from the Marshes, platinum print by Peter Henry Emerson, 1886
Dance Study by Adolph de Meyer 1912 Met Museum Collection
Title: [Thomas Eakins and John Laurie Wallace on a Beach]
The cyanotype is a slow-reacting, photographic printing formulation sensitive to a limited near-ultraviolet and blue light spectrum, the range of 300 nm to 400 nm, known as UVA radiation. It produces
A cyanotype of algae by 19th century botanist Anna Atkins
Sir John Herschel (1842) Experimental cyanotype of an unidentified engraving of a lady with a harp, Museum of the History of Science
Architectural drawing blueprint, Canada, 1936
Cyanotype postcard, Racine, Wis., c. 1910