Photographs are still images produced on light-sensitive materials and also includes images stored digitally.
Getty's Art & Architecture Thesaurus gives this definition.
Refers to still images produced from radiation-sensitive materials (sensitive to light, electron beams, or nuclear radiation), generally by means of the chemical action of light on a sensitive film, paper, glass, or metal. Photographs may be positive or negative, opaque or transparent. The concept does not include reproductive prints of documents and technical drawings, for which descriptors found under "<reprographic copies>" are more appropriate. The concept may include photographs made by digital means.
Getty Art & Architecture Thesaurus Online. "photographs", 2004, http://vocab.getty.edu/page/aat/300046300
There are delicate layers of materials in both film and photographic prints. The figure below explores what most film layers consist of.
Rapid identification of cellulose nitrate and cellulose acetate film in historic photograph collections. Carter, Elizabeth & Swarbrick, Brad & Harrison, Therese & Ronai, Lucilla. (2020). Heritage Science. 8. 10.1186/s40494-020-00395-y
Documented inventors of photography
Publications
Websites
Morgan Breitenstein. "Historic photographic processes in a nutshell." Denver Public Library, 2016, https://history.denverlibrary.org/news/photos/historic-photographic-processes-nutshell, 12 December 2024
Eastman Museum. "Photographic processes video series & glossary." Eastman Museum. 2022, https://www.eastman.org/processvideos, 12 December 2024
John Hunter. "Chronology of photographic processes." National Park Service Conserve O Grams 14/3. July 1993, https://www.nps.gov/subjects/museums/conserve-o-grams.htm, 12 December 2024
The New York Public Library. "An introduction to photographic process." The New York Public Library, 2024, https://www.nypl.org/collections/nypl-recommendations/guides/photographic-processes, 12 December 2024
Gawain Weaver. "Library." Gawain Weaver Art Conservation. 2008-2024, https://gawainweaver.com/library/, 12 December 2024
Overview of photography by George Easton Museum Series
Here are some general timelines with historical dates courtesy of NYPL, Conserve O Gram 14/3 and National Parks Service. For more information about these subjects please explore these sites.
Dates | What | Description |
---|---|---|
1839 | Daguerreotype | daguerreotype process is made public in France |
1840 | Salt paper print | paper negative invented by William Henry Fox Talbot |
1842 | Cyanotype | Sir John Herschel invented the cyanotype |
1849 | Stereoscopic image | advent of the twin-lens camera and the development of the stereoscopic image |
1880 | Glass plate negative | introduction of the glass plate negative process |
Dates | What | Description |
---|---|---|
1887 | Cellulose negative | introduction of cellulose photographic film negative |
1888 | Kodak box camera | introduction of the Kodak box camera simplifies photography and casual "snapshot" photography was born |
1889 | Cellulose nitrate roll film | introduction by Eastman Kodak Company (not 35mm) |
1895 | Cellulose nitrate motion picture film | introduced |
1920s | Color photographic process | advent of the carbro print- the first full color photographic process |
1933 | Discontinuation nitrate x-ray film | |
1935 | Color film | development of Kodachrome film - the first multi-layered color film (cellulose acetate base) |
Date | What | Description |
---|---|---|
circa 1935 | Agfa, Defender, DuPont Defender and Hammer produced cellulose diacetate films | |
1938 | Discontinuation of 35mm cellulose nitrate film roll | however, still photographers were known to use cellulose nitrate 35mm motion picture film after this date |
1939 | Discontinuation of portrait and commercial cellulose nitrate sheet film | |
1942 | Discontinuation of cellulose nitrate aerial film | |
1947 | Polaroid invented | Edwin Land creates the dye diffusion transfer print, commonly known as instant photography or the Polaroid |
1949 | Discontinuation of cellulose nitrate film packs | |
1951 | Discontinuation of cellulose nitrate motion picture film | other companies other than Kodak may have produced it into the late 1950s |
1955 | First polyester-based films | |
1963 | Polaroid color camera released |
Timeline 1975-1994
Date | Description |
---|---|
1975 | Steven Sasson, who was working for Eastman Kodak Company, created the first digital camera |
1984 | Canon demonstrates the first digital electronic still camera |
1990 | first digital cameras are available on the retail market |
1992 | Kodak introduces the first PhotoCD |
1994 | sale of the first consumer-level digital camera able to work with a home computer |
Graphics Atlas provides a database and references to identifying prints.
Guidelines for Care & Identification of Film-Base Photographic Materials, by Monique C. Fischer, Andrew Robb at the Art Conservation Program at the University of Delaware, Winterthur Museum, 1993
Archivist's Tools and Tips online provides a chart to help identify notches in film.
National Parks Conserve O Gram 14-9 provides information on identifying film based photographic materials.
Publications: