Ambrotype is a type of early photographic process that was popular in the mid-19th century. It involves creating a positive image on a glass plate coated with a light-sensitive emulsion.
The process begins with a sheet of glass coated with a sticky substance called collodion. The plate is then immersed in a silver nitrate solution, which makes it sensitive to light. The plate is then exposed to light with a camera, creating a negative image on the plate. The plate is then developed, fixed, and rinsed to create a positive image that appears as a unique, one-of-a-kind photograph on glass.
Ambrotypes were a popular form of portraiture in the mid-19th century and are now considered a rare and collectible art form. They are known for their unique, one-of-a-kind beauty and their ability to capture intricate details and textures that other photographic processes cannot.