Erotic photography

Nude pictures prior to 1835 generally consisted of paintings and drawings. That year, Louis-Jacques-Mandé Daguerre invented the first practical process of photography. Unlike earlier photographs, his daguerreotypes had stunning quality and did not fade with time. The new technology did not go unnoticed by artists eager for new ways to depict the undraped feminine form. In Nude photography, 1840–1920, Peter Marshall notes: "In the prevailing moral climate at the time of the invention of photography, the only officially sanctioned photography of the body was for the production of artist's studies. Many of the surviving examples of daguerreotypes are clearly not in this genre but have a sensuality that clearly implies they were designed as erotic or pornographic images".

The daguerreotypes were not without drawbacks, however. The main difficulty was that they could only be reproduced by photographing the original picture. In addition, the earliest daguerreotypes had exposure times ranging from three to fifteen minutes, making them somewhat impractical for portraiture. Since one picture could cost a week's salary, the audience for nudes mostly consisted of artists and the upper echelon of society. Nude stereoscopy began in 1838 and became extremely popular. In 1841, William Fox Talbot patented the calotype process, the first negative-positive process, making possible multiple copies. The technology was immediately employed to reproduce nude portraits.