a Tintype a photograph made by creating a direct positive on a thin sheet of metal coated with a dark lacquer or enamel. Tintypes were mostly used in the 1860´s and 1870´s and have slowly become less popular with the appearance of digital photography. Some advantages of tintype photography is that it doesn't need to be dried or developed making for a way faster traditional photography. This process was first invented by by Adolphe-Alexandre Martin in France and later it was taken to America and the UK. tintype was essentially a variant of the ambrotype, replacing the latter's glass plate with a thin sheet of japanned iron, ambrotype photography was first invented in 1851.
There is two types of process for tintype photography. wet and dry. both processes are pretty similar with the difference being the chemicals that are used in the action.
ferrotyping is a finishing treatment applied to glossy photographic paper to bring out the most quality picture that it can be.
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