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Darkroom manipulation is a traditional method of manipulating photographs without the use of computers. Some of the common techniques for darkroom manipulation are dodging, burning, and masking, which though similar conceptually to digital manipulations, involve physical rather than virtual techniques.
AGFA photographic plates, 1880 Mimosa Panchroma-Studio-Antihalo Panchromatic glass plates, 9 x 12cm, Mimosa A.-G. Dresden Negative plate. Photographic plates preceded photographic film as a capture medium in photography. The light-sensitive emulsion of silver salts was coated on a glass plate, typically thinner than common window glass. They ...
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: if the bare side was blackened, the thickness of the ...
The collection comprises 35,427 glass plates, ranging in size from 4 to 12 inches (100 to 300 mm), as well as almost 50,000 prints, and forms a detailed photographic record of Thailand (then known as Siam) during the country's period of modernization. [1] The collection was inscribed on the UNESCO Memory of the World Register in 2017. [2]
Color positive picture (A) and negative (B), monochrome positive picture (C) and negative (D) In photography, a negative is an image, usually on a strip or sheet of transparent plastic film, in which the lightest areas of the photographed subject appear darkest and the darkest areas appear lightest. [1]
Early wet-plate collodion portrait of a lady. Collodion glass plate negative: This process was invented by the Englishman Frederick Scott Archer in 1851. While the first process to take advantage of glass plates was the albumen print method, it was quite laborious and was quickly surpassed by the collodion glass plate negative in common use. [3]
The fundamental technology of most photography, whether digital or analog, is the camera obscura effect and its ability to transform of a three dimensional scene into a two dimensional image. At its most basic, a camera obscura consists of a darkened box, with a very small hole in one side, which projects an image from the outside world onto ...
The system used two glass plates, one of which was the colour screen plate while the other was a standard black-and-white negative plate. The colour screen plate comprised a series of red, green and blue filters, laid down in a regular pattern of lines to form a réseau, or matrix. Because the negatives of the time required long exposure times ...