The ambrotype is a photograph that creates a positive image on a sheet of glass using the wet plate process.
A tintype is a photograph made by creating a direct positive on a thin sheet of iron coated with a dark lacquer or enamel and used as the support for the photographic emulsion.
A heliograph is a wireless solar telegraph that signals by using flashes of sunlight and a mirror.
The Daguerreotype process lights up a plate, then exposes it to halogen fumes and transportes to a camera via a light-tight plate holder.
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