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Notes: Invented by Prof. Hamilton
Smith of Ohio in 1856, tintype photos
were photos with the image on a metal
surface rather than on glass or paper
which had evolved from the ambrotype
whose images were collodion negatives
on glass, viewed against a black
surface. Tintypes, on the other hand,
were negatives on iron, coated with
black paint, lacquer or enamel. The process was
inexpensive, and quality often poor
and were popular from the 1860s. It
should be noted, too, that most
tintype or ferrotype images appear
reversed (left-to-right) from
reality. Although some cameras were
fitted with mirrors or a 45-degree
prism to reverse and correct the
image, and some photographers would
photograph the reversed ferrotype to
produce a properly oriented image,
most images appear reversed Tintypes
were typically superseded by gelatin
emulsion dry plates in the 1880s.
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