Stereoscopic daguerreotype

Author	Unknown
Title	[Figures of a soldier and a woman with a child]
Date	ca. 1860
Register	05780

The daguerreotype image was captured directly on a copper metal plate emulsified with silver iodide. Daguerreotypes were unique objects, copies of the image could not be made due to the fact that a negative specifically did not exist. In fact, a daguerreotype is both negative and positive, and you can see the negative or the positive depending on the angles of observation and incidence of the light it receives. Once the plate was developed, the daguerreotype was hermetically sealed in a case to avoid corrosion of the metal plate and to prevent tampering outside the protective box from irreversibly damaging it. The daguerreotypes had to be preserved without unsealing the cases. The photographic daguerreotype was patented by Daguerre in 1839, who took as a basis the research started by Niépce, with whom he went into partnership in 1829. The use of this photographic procedure continued until the late 1860s and meant fierce competition with the painters and portraitists of the time, as drawings and engravings could not compete with the realism of photographic images.

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