The platino-palladiotype process
The following method of printing in platinum, palladium, or a mixture of both metals, has been evolved to overcome the difficulties and disadvantages of the traditional platinotype.
peter bargh
The New Cyanotype – Cyanotype II process
The cyanotype process, also known as the blue print process was invented by Sir John Herschel in 1842 and is still performed today by many darkroom enthusiasts.