Bichromate Gum advanced 1 day session Workshops as photography advanced in the

as photography advanced in the late 19th and early 20th centuries

Introduction to astrology — solar and lunar signs (30 min) — followed by two hours of cyanotype making

tinted creations

and with a process you can continue

creating the first carbon print

Bichromate Gum advanced 1 day session Workshops as photography advanced in theBichromate Gum is a photographic printing process invented in the early days of photography. William Henry Fox Talbot found that sensitized dichromated colloids such as gelatin and gum arabic became insoluble in water after exposure to sunlight. Alphonse Poitevin added carbon pigment to the colloids in 1855, creating the first carbon print. In 1858, John Pouncy used colored pigment with gum arabic to create the first color images. We rediscover gently