Share
VIDEOS 1 TO 50
SIlver Plate Photography - Video 1- 11/5/13
SIlver Plate Photography - Video 1- 11/5/13
Published: 2013/11/06
Channel: Brock Archer
Photographic plate Meaning
Photographic plate Meaning
Published: 2015/04/20
Channel: SDictionary
Civil War Era Glass Plate Photography Demonstration - Rob Gibson
Civil War Era Glass Plate Photography Demonstration - Rob Gibson
Published: 2011/06/07
Channel: C-SPAN
The Gelatin Silver Process - Photographic Processes Series - Chapter 10 of 12
The Gelatin Silver Process - Photographic Processes Series - Chapter 10 of 12
Published: 2014/12/12
Channel: George Eastman Museum
The Wet Plate Collodion Process - Honza Hronek photographer in Paris
The Wet Plate Collodion Process - Honza Hronek photographer in Paris
Published: 2012/10/21
Channel: LenniePhotographe
Photographic plate
Photographic plate
Published: 2016/09/16
Channel: WikiWikiup
Wet Plate Photography - Fixing the Glass Negative - Justin Borucki - Snake & Camera
Wet Plate Photography - Fixing the Glass Negative - Justin Borucki - Snake & Camera
Published: 2015/02/25
Channel: Justin Borucki
The Revival of Wet Plate Photography - Shaw TV Victoria
The Revival of Wet Plate Photography - Shaw TV Victoria
Published: 2014/02/19
Channel: ShawTVSouthVI
Photographic Plate by Lymon Willis
Photographic Plate by Lymon Willis
Published: 2011/04/26
Channel: lymonwillis
What Is Meant By Photographic Plate?
What Is Meant By Photographic Plate?
Published: 2017/08/20
Channel: Dagmar Dagmar
Photographic Plate by Lymon Willis
Photographic Plate by Lymon Willis
Published: 2010/07/02
Channel: Lymon Willis
Working of Alpha, Beta and Gamma Rays
Working of Alpha, Beta and Gamma Rays
Published: 2016/02/19
Channel: Physics4students
Photography Plate, January 2014
Photography Plate, January 2014
Published: 2014/02/05
Channel: Michaela Encisa
Dry Plate Kallitype On Glass Results
Dry Plate Kallitype On Glass Results
Published: 2016/03/26
Channel: Keo Mitchell
[FRAMED] Episode 16: Daniel Carrillo Wet Plate Photography
[FRAMED] Episode 16: Daniel Carrillo Wet Plate Photography
Published: 2011/10/18
Channel: Framed Show
Wet Plate 101 - Wet Plate Collodion Pt 1
Wet Plate 101 - Wet Plate Collodion Pt 1
Published: 2016/09/05
Channel: All Aspects of Photography
Shapeoko 3: Building a Large Format Camera (For Wet Plate Photography)
Shapeoko 3: Building a Large Format Camera (For Wet Plate Photography)
Published: 2015/11/18
Channel: Dieter Schneider
Dry Plate Kallitype Process
Dry Plate Kallitype Process
Published: 2016/03/21
Channel: Keo Mitchell
Photographic Plate Camera Sweden 2011
Photographic Plate Camera Sweden 2011
Published: 2011/11/11
Channel: spligg
The Wet Collodion Process
The Wet Collodion Process
Published: 2010/11/18
Channel: Getty Museum
Stereo Photgraphy #3 - Collodion & Photographic plate
Stereo Photgraphy #3 - Collodion & Photographic plate
Published: 2017/02/28
Channel: Renaud Lacorte
C.P. Goerz Compur Dogmar dry glass plate camera
C.P. Goerz Compur Dogmar dry glass plate camera
Published: 2012/11/02
Channel: sorenrosenberg
Century old photographic plates of Colorado mountain climbers
Century old photographic plates of Colorado mountain climbers
Published: 2013/09/19
Channel: zeekzilch
Photographic Plate
Photographic Plate
Published: 2011/06/24
Channel: Indian Sign Language RKMVU-CBE
Digitizing Small Astronomical Photographic Plates
Digitizing Small Astronomical Photographic Plates
Published: 2013/12/04
Channel: Astronomical Photographic Data Archive
What Is A Dry Plate In Photography?
What Is A Dry Plate In Photography?
Published: 2017/08/19
Channel: Uco Uco
4 Most Effective Solutions for Tabletop Photographers: Shooting table, glass plate, and more
4 Most Effective Solutions for Tabletop Photographers: Shooting table, glass plate, and more
Published: 2015/01/28
Channel: PHOTIGY
APDA photographic plates
APDA photographic plates
Published: 2014/01/23
Channel: Astronomical Photographic Data Archive
Photographing Glass Negatives - Photographic Project Tutorial
Photographing Glass Negatives - Photographic Project Tutorial
Published: 2017/09/18
Channel: 1nformatica
Civil War Glass Plate Photography
Civil War Glass Plate Photography
Published: 2015/03/29
Channel: Bobblehead George
How To Scan Glass Plate Negatives at the Luther College Archives
How To Scan Glass Plate Negatives at the Luther College Archives
Published: 2014/01/14
Channel: Sasha Griffin
Wet Plate 101 -  Wet Plate Collodion Part 4 - Making A Glass Plate Negative
Wet Plate 101 - Wet Plate Collodion Part 4 - Making A Glass Plate Negative
Published: 2016/11/25
Channel: All Aspects of Photography
Wet Plate Collodion - How to make a tintype step by step.
Wet Plate Collodion - How to make a tintype step by step.
Published: 2015/06/29
Channel: Dieter Schneider
CCDs replace photographic plates
CCDs replace photographic plates
Published: 2012/11/21
Channel: Jeff Stanger
Wet Plate 101 - Wet Plate Collodion Pt 3 Prepare & Clean Glass Plates
Wet Plate 101 - Wet Plate Collodion Pt 3 Prepare & Clean Glass Plates
Published: 2016/09/16
Channel: All Aspects of Photography
Machine Operator Photographic Plates interview questions
Machine Operator Photographic Plates interview questions
Published: 2017/10/18
Channel: Job Preparation Questions
[5.2] Radioactive detectors   Photographic detectors
[5.2] Radioactive detectors Photographic detectors
Published: 2015/07/09
Channel: SPM Malaysia IPTV
The Wet Plate Collodion Process
The Wet Plate Collodion Process
Published: 2006/10/22
Channel: Quinn Jacobson
Plate Lithography at Edinburgh Printmakers
Plate Lithography at Edinburgh Printmakers
Published: 2013/02/05
Channel: edinburghprintmakers
Photographic Glass Plates - Early Days Of Motoring
Photographic Glass Plates - Early Days Of Motoring
Published: 2013/10/29
Channel: Men and Motors
Cosmic rays tearing atoms on a photographic plate
Cosmic rays tearing atoms on a photographic plate
Published: 2013/07/12
Channel: Timothy King
Detection of X–rays
Detection of X–rays
Published: 2016/07/01
Channel: Physics4students
Glass Negatives from 1891
Glass Negatives from 1891
Published: 2014/02/23
Channel: Image Doctor Photograph Restoration
Storing glass plate negatives
Storing glass plate negatives
Published: 2012/11/21
Channel: National Museum of Australia
KETC | Living St. Louis | Glass Plate Photography
KETC | Living St. Louis | Glass Plate Photography
Published: 2009/06/10
Channel: Nine Network
30,000 glass plate negatives being restored
30,000 glass plate negatives being restored
Published: 2016/07/31
Channel: TheWichitaEagle
Will Dunniway  making wet plate collodion glass negatives  at Yosemite
Will Dunniway making wet plate collodion glass negatives at Yosemite
Published: 2010/07/07
Channel: Will Dunniway
Wet Plate Process & Other Mid 19th Century Photographic Advances
Wet Plate Process & Other Mid 19th Century Photographic Advances
Published: 2011/08/31
Channel: Michelle Pacansky-Brock
Glass negative
Glass negative
Published: 2014/08/01
Channel: lohere
Cliff Riordan: The Glass Plate Negative Project -- A Good Old Fashioned Digitisation Project
Cliff Riordan: The Glass Plate Negative Project -- A Good Old Fashioned Digitisation Project
Published: 2014/03/26
Channel: National Digital Forum
NEXT
GO TO RESULTS [51 .. 100]

WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
Jump to: navigation, search
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, instead of a clear plastic film. Glass plates were far superior to film for research-quality imaging because they were extremely stable and less likely to bend or distort, especially in large-format frames for wide-field imaging. Early plates used the wet collodion process. The wet plate process was replaced late in the 19th century by gelatin dry plates. Glass plate photographic material largely faded from the consumer market in the early years of the 20th century, as more convenient and less fragile films were increasingly adopted. However, photographic plates were reportedly still being used by one photography business in London until the 1970s,[1] and they were in wide use by the professional astronomical community as late as the 1990s. Workshops on the use of glass plate photography as an alternative medium or for artistic use are still being conducted.

A view camera nicknamed "The Mammoth" weighing 1,400 pounds (640 kg) was built by George R. Lawrence in 1899, specifically to photograph "The Alton Limited" train owned by the Chicago & Alton Railway. It took photographs on glass plates measuring 8 feet (2.4 m) × 4.5 feet (1.4 m).[2]

Scientific uses[edit]

Astronomy[edit]

Many famous astronomical surveys were taken using photographic plates, including the first Palomar Observatory Sky Survey (POSS) of the 1950s, the follow-up POSS-II survey of the 1990s, and the UK Schmidt survey of southern declinations. A number of observatories, including Harvard College and Sonneberg, maintain large archives of photographic plates, which are used primarily for historical research on variable stars.

Many solar system objects were discovered by using photographic plates, superseding earlier visual methods. Discovery of minor planets using photographic plates was pioneered by Max Wolf beginning with his discovery of 323 Brucia in 1891. The first natural satellite discovered using photographic plates was Phoebe in 1898. Pluto was discovered using photographic plates in a blink comparator; its moon Charon was discovered 48 years later in 1978 by U.S. Naval Observatory astronomer James W. Christy by carefully examining a bulge in Pluto's image on a photographic plate. [3]

Glass-backed plates, rather than film, were generally used in astronomy because they do not shrink or deform noticeably in the development process or under environmental changes. Several important applications of astrophotography, including astronomical spectroscopy and astrometry, continued using plates until digital imaging improved to the point where it could outmatch photographic results. Kodak and other manufacturers discontinued production of most kinds of plates as the market for them dwindled between 1980 and 2000, terminating most remaining astronomical use, including for sky surveys.[4]

Physics[edit]

Photographic plates were also an important tool in early high-energy physics, as they get blackened by ionizing radiation. For example, in the 1910s, Victor Franz Hess discovered cosmic radiation as it left traces on stacks of photographic plates, which he left for that purpose on high mountains or sent into the even higher atmosphere using balloons.

Electron microscopy[edit]

Photographic emulsions were originally coated on thin glass plates for imaging with electron microscopes, which provided a more rigid, stable and flatter plane compared to plastic films.[5] Beginning in the 1970s, high-contrast, fine grain emulsions coated on thicker plastic films manufactured by Kodak, Ilford and DuPont replaced glass plates. These films have largely been replaced by digitally imaging technologies.[6]

Medical imaging[edit]

The sensitivity of certain types of photographic plates to ionizing radiation (usually X-rays) is also useful in medical imaging and material science applications, although they have been largely replaced with reusable and computer readable image plate detectors and other types of X-ray detectors.

Decline[edit]

The earliest flexible films of the late 1880s were sold for amateur use in medium-format cameras. The plastic was not of very high optical quality and tended to curl and otherwise not provide as desirably flat a support surface as a sheet of glass. Initially, a transparent plastic base was more expensive to produce than glass. Quality was eventually improved, manufacturing costs came down, and most amateurs gladly abandoned plates for films. After large-format high quality cut films for professional photographers were introduced in the late 1910s, the use of plates for ordinary photography of any kind became increasingly rare.

The persistent use of plates in astronomical and other scientific applications started to decline in the early 1980s as they were gradually replaced by charge-coupled devices (CCDs), which also provide outstanding dimensional stability. CCD cameras have several advantages over glass plates, including high efficiency, linear light response, and simplified image acquisition and processing. However, even the largest CCD formats (e.g., 8192x8192 pixels) still do not have the detecting area and resolution of most photographic plates, which has forced modern survey cameras to use large CCD arrays to obtain the same coverage.

The manufacture of photographic plates has been discontinued by Kodak, Agfa and other widely known traditional makers. Eastern European sources have subsequently catered to the minimal remaining demand, practically all of it for use in holography, which requires a recording medium with a large surface area and a submicroscopic level of resolution that currently (2014) available electronic image sensors cannot provide. In the realm of traditional photography, a small number of historical process enthusiasts make their own wet or dry plates from raw materials and use them in vintage large-format cameras.

Preservation[edit]

Several institutions have established archives to preserve photographic plates and prevent their valuable historical information from being lost. The emulsion on the plate can deteriorate. In addition, the glass plate medium is fragile and prone to cracking if not stored correctly.[7]

Historical archives[edit]

The United States Library of Congress has a large collection of both wet and dry plate photographic negatives, dating from the 1855 through 1900,[8] over 7500 of which have been digitized from the period 1861 to 1865.[9] The George Eastman Museum holds an extensive collection of photographic plates.[10][not in citation given] In 1955, wet plate negatives measuring 4 feet 6 inches (1.37 m) × 3 feet 2 inches (0.97 m) were reported to have been discovered in 1951 as part of the Holtermann Collection. These purportedly were the largest glass negatives discovered at that time.[11] These images were taken in 1875 by Charles Bayliss[12] and formed the "Shore Tower" panorama[13] of Sydney Harbour.[11] Albumen contact prints made from these negatives are in the holdings of the Holtermann Collection, the negatives are listed among the current holdings of the Collection.[12][14]

Scientific archives[edit]

Preservation of photographic plates is a particular need in astronomy, where changes often occur slowly and the plates represent irreplaceable records of the sky and astronomical objects that extend back over 100 years. The method of digitalization of astronomical plates enables free and easy access to those unique astronomical data and it is one of the most popular approaches to preserve them. This approach was applied at the Baldone Astrophysical Observatory where about 22000 glass and film plates of the Schmidt Telescope were scanned and cataloged.[15] Another example of an astronomical plate archive is the Astronomical Photographic Data Archive (APDA) at the Pisgah Astronomical Research Institute (PARI). APDA was created in response to recommendations of a group of international scientists who gathered in 2007 to discuss how to best preserve astronomical plates (see the Osborn and Robbins reference listed under Further reading). The discussions revealed that some observatories no longer could maintain their plate collections and needed a place to archive them. APDA is dedicated to housing and cataloging unwanted plates, with the goal to eventually catalog the plates and create a database of images that can be accessed via the Internet by the global community of scientists, researchers, and students. APDA now has a collection of more than 200,000 photographic images from over 40 observatories that are housed in a secure building with environmental control. The facility possesses several plate scanners, including two high-precision ones, GAMMA I and GAMMA II, built for NASA and the Space Telescope Science Institute (STScI) and used by a team under the leadership of the late Dr. Barry Lasker to develop the Guide Star Catalog and Digitized Sky Survey that are used to guide and direct the Hubble Space Telescope. APDA's networked storage system can store and analyze more than 100 terabytes of data.

See also[edit]

References[edit]

  1. ^ "Harrow Photos - History of the Hills & Saunders Photographic Collection". Harrow School. Archived from the original on 17 April 2009. Retrieved 8 February 2016. 
  2. ^ "The Largest Photograph in the World of the Handsomest Train in the World" (PDF). Chicago & Alton Railway. Retrieved 30 January 2016. 
  3. ^ "Charon Discovery Image - Galleries - NASA Solar System Exploration". NASA Solar System Exploration. Retrieved 21 January 2016. 
  4. ^ Girard, Terrence M.; Dinescu, Dana I.; Van Altena, William F.; Platais, Imants; Monet, David G.; López, Carlos E. (2004). "The Southern Proper Motion Program. III. A Near-Complete Catalog toV = 17.5". The Astronomical Journal. 127 (5): 3060. arXiv:astro-ph/0402411Freely accessible. Bibcode:2004AJ....127.3060G. doi:10.1086/383545. 
  5. ^ Dykstra, Michael J.; Reuss, Laura E. (2003). Biological electron microscopy : theory, techniques, and troubleshooting (2nd ed.). New York, NY: Kluwer Academic. p. 194. ISBN 978-0306477492. Retrieved 21 January 2016. 
  6. ^ Fan, G. Y.; Ellisman, M. H. (1 October 2000). "Digital imaging in transmission electron microscopy". Journal of Microscopy. 200 (Pt 1): 1–13. ISSN 0022-2720. PMID 11012823. 
  7. ^ Gillett, Martine; Garnier, Chantal; Flieder, Francoise (1986). "Glass plate negatives. Preservation and restoration". Restaurator. 7 (2): 49–80. 
  8. ^ "Civil War Glass Negatives and Related Prints". U.S. Library of Congress. Retrieved 6 April 2016. 
  9. ^ "Civil War Glass Negatives and Related Prints". United States Library of Congress. Retrieved 6 April 2016. 
  10. ^ "Conservation". George Eastman Museum. Retrieved 23 March 2016. 
  11. ^ a b "Australia's Holtermann collection of wet plate negatives" (PDF). Journal of Photography of the George Eastman House. 4 (3): 6–8. March 1955. Retrieved 23 March 2016. 
  12. ^ a b "Panorama of Sydney and the Harbour, New South Wales". Art Gallery of New South Wales. Retrieved 24 March 2016. 
  13. ^ "Holtermann panorama" (PDF). National Gallery of Australia. Retrieved 24 March 2016. 
  14. ^ "Three glass plate negatives of Sydney Harbour from the Holtermann residence, St. Leonards". State Library of New South Wales Catalogue. Retrieved 7 April 2016. 
  15. ^ Ilgmars Eglitis and Vitaly Andruk (June 2017). "Processing of Digital Plates 1.2m of Baldone Observatory Schmidt Telescope". 26: 7–17. Bibcode:2017OAst...26....1N. doi:10.1515/astro-2017-0002. 

Further reading[edit]

  • Peter Kroll, Constanze La Dous, Hans-Jürgen Bräuer: "Treasure Hunting in Astronomical Plate Archives." (Proceedings of the international Workshop held at Sonneberg Observatory, March 4 to 6, 1999.) Verlag Herri Deutsch, Frankfurt am Main (1999), ISBN 3-8171-1599-7
  • Wayne Osborn, Lee Robbins: "Preserving Astronomy's Photographic Legacy: Current State and the Future of North American Astronomical Plates." Astronomical Society of the Pacific Conference Series, Vol. 410 (2009), ISBN 978-1-58381-700-1
  • Pisgah Astronomical Research Institute (PARI) Astronomical Photographic Data Archive (APDA) http://www.pari.edu/about_pari/pari-photos/archived-photos/apda

External links[edit]

Disclaimer

None of the audio/visual content is hosted on this site. All media is embedded from other sites such as GoogleVideo, Wikipedia, YouTube etc. Therefore, this site has no control over the copyright issues of the streaming media.

All issues concerning copyright violations should be aimed at the sites hosting the material. This site does not host any of the streaming media and the owner has not uploaded any of the material to the video hosting servers. Anyone can find the same content on Google Video or YouTube by themselves.

The owner of this site cannot know which documentaries are in public domain, which has been uploaded to e.g. YouTube by the owner and which has been uploaded without permission. The copyright owner must contact the source if he wants his material off the Internet completely.

Powered by YouTube
Wikipedia content is licensed under the GFDL and (CC) license