The ambrotype from Ancient Greek: Like a print on paper, it is viewed by reflected light. Like the daguerreotypewhich it replaced, and like the prints produced by a Polaroid cameraeach is a unique original that could only be duplicated by using a camera to copy it.
The ambrotype was introduced in the s. During the s it was superseded by the tintypea similar photograph on thin black-lacquered iron, hard to distinguish from an ambrotype if under glass.
One side of a clean glass plate was coated with a thin layer of iodized collodionthen dipped in a silver nitrate solution. The plate was exposed in the camera while still wet.
Exposure times varied from five to sixty seconds or more depending on the brightness of the lighting and the speed of the camera lens. The plate was then developed and fixed. The resulting negativewhen viewed by reflected light against a black background, appears to Ambrotype dating apps a positive image: This effect was integrated by backing the plate with black velvet; by taking the picture on a plate made of dark reddish-colored glass the result was called a ruby ambrotype ; or by coating one side of the plate with black varnish.
Either the emulsion side or the bare side could be coated: In either case, another plate of glass was put over the Ambrotype dating apps emulsion side to protect it, and the whole was mounted in a metal frame and kept in a protective case.
In some instances the protective glass was cemented directly to the emulsion, generally with a balsam resin. This protected the image well but tended to darken it. Ambrotypes were sometimes hand-tinted; untinted ambrotypes are monochromegray or tan in their lightest areas. The ambrotype was based on the wet plate collodion process invented by Frederick Scott Archer. Ambrotypes were deliberately underexposed negatives made by that process and optimized for viewing as positives instead.
InJames Ambrose Cutting of Boston took out several patents relating to the process. He may be responsible for coining the term "ambrotype".
Ambrotypes were much less expensive to produce than daguerreotypesthe medium that predominated when they were introduced, and did not have the bright mirror-like metallic surface that could make daguerreotypes troublesome to view and which some people disliked. An ambrotype, however, appeared dull and drab when compared with the brilliance of a well-made and properly viewed daguerreotype.
By the late s, the ambrotype was overtaking the daguerreotype in popularity. By the mids, the ambrotype itself was being by the tintype"Ambrotype dating apps" similar image on a sturdy black-lacquered thin iron sheet, as well as by photographic albumen paper prints made from glass plate collodion negatives. Peninsular War veteran and his wife, c.
American actress Charlotte Cushman Boy with elaborately hand-tinted tartan clothing, c. From Wikipedia, the free encyclopedia. This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources.
Unsourced material may be challenged and removed. June Learn how and when to remove this template message. Bare ambrotype plate, c. Stereoscopic portrait of a surgeon, c.
Whaling ship in Honolulu harbor,
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