High Quality Content by WIKIPEDIA articles! The collodion process is an early photographic process, which was replaced at the end of the 19th century with dry plates—glass plates with a photographic emulsion of silver halides suspended in gelatin. The gelatin had the effect of greatly increasing the speed of the plates enabling shorter exposure times. The wet plate collodion process was still in use in the printing industry in the 1960s for line and tone work (mostly printed material involving black type against a white background) as for large work it was much cheaper than gelatin film. The process is said to have been invented, almost simultaneously, by Frederick Scott Archer and Gustave Le Gray in about 1850. During the following 30 to 40 years it was popular, and many photographers and experimenters refined the process.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.