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Photograph Basics: Overview of Photography

General History of Photography

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

What is it made out of?

There are delicate layers of materials in both film and photographic prints. The figure below explores what most film layers consist of. 

Figure 1. 

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

  • Joseph Nicéphore Niépce created the first documented photographic print from a heliographic process taken out of a window in France in 1826.
  • Louis-Jacques-Mandé Daguerrein 1839 created a practical method for capturing images.
  • Henry Fox Talbot invented the salted paper and calotype process in 1840s
  • George Eastman developed a flexible film in the 1890s.
  • Edwin Land creates the dye diffusion transfer print, commonly known as instant photography or the Polaroid in 1947.
  • Steven Sasson, who was working for Eastman Kodak Company, created the digital camera in 1975. 

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.

Timeline 1839-1880

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
Timeline 1889-1935
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)
Timeline 1935-1955
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.

Basics:

  • Do not touch the surface of a photograph with your bare hands. Even if you wash your hands, they still generate oils. Your fingerprints will eventually eat away at the surface of a photograph and damage the image.
  • Keep away from light. Light will fade a photograph, and the heat generated will from the light source will accelerate the deterioration of the image.
  • Keep dirt and dust away from photographs. Dirt and dust contain chemicals that can react to the materials in a photograph. Mitigate this by storing materials in archival enclosures.
  • Do not store photographs in humid and hot conditions. Attics and basements should be avoided if possible.
    • Fluctuations in temperature and humidity causes instability in the chemicals that make up a photograph. The chemical process that made the photograph can be reinitiated when there are fluctuations and can damage or destroy a photograph.
  • Contain photographs in acid free/lignin free materials. If you put a photograph next to acidic materials like newsprint the acid in the paper will stain or otherwise react to the photograph causing irreversible damage.
    • Fun fact: Did you know that acid free paper can reacidify if there is lignin in the paper? Ask for lignin free when storing archival materials.
  • Identify your photographs if you want them to be useful in the future. If nobody knows what Great Aunt Tilly looks like but you, once you are not around, she might end up at a flea market or worse.

Publications: