A tintype, also known as a melanotype or ferrotype, is a photograph made by creating a direct positive on a thin sheet of metal, colloquially called 'tin' (though not actually tinplate), coated with a dark lacquer or Enamel paint and used as the support for the photographic emulsion. It was introduced in 1853 by Adolphe Alexandre Martin in Paris. It competed with both the ambrotype process and the older and established daguerreotype, finding particular adoption in North America. Tintypes enjoyed their widest use during the 1860s and 1870s, but lesser use of the medium persisted into 1930s and it has been revived as a novelty and fine art form in the 21st century. It has been described as the first "truly democratic" medium for mass portraiture.
Tintypes were particularly used for portraits. They were at first usually made in a formal photographic studio, like daguerreotypes and other early types of photographs. At the time though the process like the professional were called specifically ferrotype and ferrotypist respectively (not photograph|er). Later on tintypes were most commonly made by ferrotypists working in booths, tents, or the open air at and , as well as by itinerant sidewalk photographers (with carts or wagons). Because the lacquered iron support was resilient and later did not need drying, a tintype could be developed and fixed and handed to the customer only a few minutes after the picture had been taken.
The tintype saw the Civil War come and go, documenting the individual soldier and horrific battle scenes. It captured scenes from the Wild West as it was easy to produce by itinerant photographers working out of covered wagons. They captured farming families in front of their new home ( house portraits), emerging towns as well as the frontier landscape, for which large plates were used.
It began losing artistic and commercial ground to higher quality on paper in the mid-1860s, yet survived for well over another half century, living mostly as a carnival novelty. The tintype's immediate predecessor, the ambrotype, was done by the same process of using a sheet of glass as the support. The glass was either of a dark color or provided with a black backing so that, as with a tintype, the underexposed negative image in the emulsion appeared as a positive. Tintypes were sturdy and did not require mounting in a protective hard case like ambrotypes and daguerreotypes.
In both processes, a very underexposed negative image was produced in the emulsion. Its densest areas, corresponding to the lightest parts of the subject, appeared gray by reflected light. The areas with the least amount of silver, corresponding to the darkest areas of the subject, were essentially transparent and appeared black when seen against the dark background provided by the lacquer. The image as a whole therefore appeared to be a dull-toned positive.
To obtain as light-toned an image as possible, potassium cyanide was normally employed as the photographic fixer. It was perhaps the most acutely hazardous of all the several highly toxic chemicals originally used in this and many other early photographic processes. To overcome the uniqueness of each picture multi-lensed cameras and single-lens cameras with a movable back holding the plate were invented. Three men from Boston are to name here. John Roberts first made use of multiple lenses, mounting as many as 32 of them on one camera. A twelve-lensed camera for example, developed in 1858, made a dozen so-called "gem" portraits with one exposure. A patent for a movable plate holder was registered by Albert S. Southworth in 1855. In 1860 both methods were combined in patents by Simon Wing, who promoted these cameras successfully and tried to enforce licensing, but failed with the Supreme Court ruling his patents invalid due to their use prior to his patents. Portrait sizes ranged from gem-size to . From about 1865 to 1910, the most popular size, called "Bon-ton", ranged from to .
Each tintype is usually a camera original, so the image is usually a mirror image, reversed left to right from reality. Sometimes the camera was fitted with a mirror or right-angle prism so that the result would be right-reading.
The tintype was essentially a variant of the ambrotype, replacing the latter's glass plate with a thin sheet of japanned iron (hence ferro). Ambrotypes often exhibit some flaking of their black back coating, cracking or detachment of the image-bearing emulsion layer, or other deterioration, but the image layer on a tintype has proven to be typically very durable, although the iron support might oxidize at its corners.
One or more hardy, lightweight, thin tintypes could be carried conveniently in a jacket pocket. They became very popular in the United States during the American Civil War. Although prints on paper ( see cartes de visite and ) soon displaced them as the most common type of photograph, the tintype process continued to enjoy considerable use throughout the 19th century and beyond, especially for casual portraiture by novelty and street photographers. In contrast to the considerable amount of manuels, books and articles in journals on the different photographic processes, they were seldomly treating the ferrotype. Whereas Edward M. Estabrooke stated in his almost unique extensive monograph The Ferrotype and How to Make It, published in 1872, that the amount of ferrotypes taken would probably surmount the production of all other techniques combined. (Cited after authorized German translation, p. 66, of Beaumont Newhall, History of Photography , 1937, 5th rev. and expand. ed., 1982.) His book and the introduction of low cost variants known as "Gem ferrotypes" and the invention of the photo booth in 1888, helped to sustain the tintype's longevity.
In 2013, California Air National Guard member and artist Ed Drew took the first tintypes in a Combat since the Civil War, when he photographed Air Force pilots serving in the Afghan War.
The contemporary photographer Victoria Will created a series of tintypes of Hollywood stars at the 2014 and 2015 Sundance Film Festivals, including portraits of Anne Hathaway, Nick Cave, and Ewan McGregor. The portraits were later published as a book.
Organisations such as the penumbra foundation still continue to use this technique, offering tintype photography sessions. Their work has been featured in the New York Times.
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