Skip to main content

Latent Image

The concept of the photographic latent image is characterized by B. Newhall as: " a relatively week light signal is amplified enormously by development" (1)

The action of light in the sensitized plate, paper or film is just the initial stage towards the formation of the photographic image, a process that must be complemented by development. The concept, according to Newhall, was announced by Talbot in 1841. Previously, Talbot allowed the action of light to be prolonged until the image appeared. The new procedure greatly reduced the necessary exposure time.

The idea that a feeble image can be "increased, brought out, and strengthened" after the completion of the exposure process, was part of the daguerreotype process, as Talbot himself noted in an address to the British Association for the Advancement of Science, after Daguerre´s disclosure of his invention. (2) It was in fact the pioneer discovery of Niépce in the 1820s. (3)

The pictures from the Salomon Andree expedition to the North Pole in 1897 are examples of the stability of the latent image. The expedition ended with the death of the explorers. Their remains were only found in 1930. And among the materials recovered, there were photographic plates which were successfully developed 33 years after being exposed.

(1) History of Photography: From 1839 to the Present
by Beaumont Newhal, New York, 1997 (5th edition) , p. 43.

(2) History of Photography: From 1839 to the Present
by Beaumont Newhal, p.25.

(3) Photography by Eric de Maré, London, 1980, p. 20.






The Örnen (Eagle) shortly after its descent onto pack ice.
Photographs by Nils Strindberg, member of the
S. A. Andrée's Arctic balloon expedition of 1897

source: http://en.wikipedia.org/wiki/File:%22Eagle%22.crashed2.jpg




Labels:

Comments

Post a Comment

Popular posts from this blog

Group f/64 Manifesto (1932)

Ansel Adams by Dorothea Lange Group f/64 Manifesto The name of this Group is derived from a diaphragm number of the photographic lens. It signifies to a large extent the qualities of clearness and definition of the photographic image which is an important element in the work of members of this Group. The chief object of the Group is to present in frequent shows what it considers the best contemporary photography of the West; in addition to the showing of the work of its members, it will include prints from other photographers who evidence tendencies in their work similar to that of the Group. Group f/64 is not pretending to cover the entire of photography or to indicate through its selection of members any deprecating opinion of the photographers who are not included in its shows. There are great number of serious workers in photography whose style and technique does not relate to the metier of the Group. Group f/64 limits its members and invitational names to those worke
1 comment
Read more

Post-photography

"The job of the photographer in the 21st century has become increasingly challenging as the practice is an overwhelmingly populist business. Anyone who has access to a camera has the power to become an artist, leaving a plethora of cached evidence on the internet for public consumption. This “found” internet content serves as a vast laboratory for major experimentation, underpinning the concept of post-photography, with endless possibilities for artists to recreate original works using avant-garde techniques drawn from both the digital and analogue eras." Fiona Martin (short presentation of the book Post-Photography: The Artist with a Camera by Robert Shore) http://www.aestheticamagazine.com/post-photography / Perhaps there is less novelty here, regarding the context of photography transformed by the new image technologies developed in the late 20th century, in the particular sense that the early impact of photography itself transformed the regimes of vision and impact
1 comment
Read more

Calotype process

"The calotype negative process was sometimes called the Talbotype , after its inventor. It was not Talbot's first photographic process (introduced in 1839), but it is the one for which he became most known. Henry Talbot devised the calotype in the autumn of 1840, perfected it by the time of its public introduction in mid-1841, and made it the subject of a patent (the patent did not extend to Scotland). The base of a calotype negative, rather than the glass or film to which we have become accustomed, was high quality writing paper. The sheet of paper was carefully selected to have a smooth and uniform texture and, wherever possible, to avoid the watermark. The first stage, conducted in candlelight, was to prepare what Talbot called his iodized paper. The paper was washed over with a solution of silver nitrate and dried by gentle heat. When nearly dr
Post a Comment
Read more