Daguerreotypes, Ambrotypes, and Tintypes
Daguerreotypes are printed on a carefully-polished silver plate which gives the finished product a distinctive, mirror-like quality.
Ambrotypes are printed on a translucent glass plate. The glass plate is then framed against a dark backing, often black velvet or lacquer, which provides the shadows for the photograph.
Tintypes were the cheapest and most durable of the three. The exposure and fixing process is very similar to an ambrotype, but the support is a thin plate of iron rather than glass.
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