Tintype process

Tintype was first described (used) Adolphe-Alexandre Martin in France in 1853 and was patented in the United States in 1856 by Hamilton Smith. The tintype (or ferrotype) process uses a thin sheet of metal (iron rater than tin as the name implies) coated in a photo-sensitive emulsion (collodion). The tintype process is a wet type process meaning that it would the plate would be exposed then processed straight away. The image that was produce was reversed that the image produced by a mirror. Like daguerreotype photographs the process was one shot meaning that image would be produced directly onto the plate (no negative meant that the images couldn't be easily reproduced).

http://www.rleggat.com/photohistory/history/tintype.htm

http://www.edinphoto.org.uk/1_early/1_early_photography_-_processes_-_tintype.htm

http://www.heartlandscience.org/comm/pdf/tintype.pdf



http://www.strever.org/Unknown/Unknown-Picts.html