History of Photography
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JB Reade's Letters to Jabez Hogg
J. B. Reade’s letters to Jabez Hogg – Reade’s last days R. DEREK WOOD [submitted to Quekett Journal of Microscopy] [submitted in Feb 2011 but NOT published] Introducing the Rev. Joseph Bancroft Xanthidia. Quite obviously Reade was Reade, FRS (1801-1870) technically adept with microscope optics and specimen manipulation, using such methods as As a vicar of the Church of England, J. B. micro-incineration. In the mid-1830s (when he Reade served his communities at the churches ran a small school in Peckham, south east of of Stone, Buckinghamshire, from 1839 until London) he used a method of microscopic 1859, then for four years at Ellesborough, also illumination, that he characterised as “oblique in Bucks, before becoming rector of refracted light” in being set up to stop direct Bishopsbourne, near Canterbury, Kent, from transmitted light entering the objective lens, 1862 until his death in December 1870. provided a black background to the specimen, In 1864 he signed ‘The Declaration of i.e. darkground-illumination. His paper on the Students of the Natural and Physical Sciences’ technique entitled ‘A New method of that “deplore that Natural Science should be Illuminating Microscopic Objects’ was looked upon with suspicion ... merely on published in 1837 as an appendix in the account of the unadvised manner in which influential book Micrographia by Goring and some are placing it in opposition to Holy Pritchard, and noticed in all books by various Writ”. Of course where religion is concerned authors on the Microscope in the following that Declaration could be interpreted in decades, including Quekett’s Practical contradictory ways, but there can be little Treatise on the Microscope (2nd edition of doubt that J. -
9780240809984 Cs.Pdf
HISTORY AND EVOLUTION OF PHOTOGRAPHY MARK OSTERMAN George Eastman House International Museum of Photography and Film GRANT B. ROMER George Eastman House International Museum of Photography and Film CCH01-K80998.inddH01-K80998.indd 1 66/20/07/20/07 44:55:07:55:07 PPMM CCH01-K80998.inddH01-K80998.indd 2 66/20/07/20/07 44:55:15:55:15 PPMM ContemporaryA Different Thoughts Set on ofthe Questions History of for Photography a New Age 3 Contemporary Thoughts on the History of Photography GRANT B. ROMER George Eastman House and International Museum of Photography and Film All photographers work today with historical perspective. Th ey know that the technology they use has an origin in the distant past. Th ey know photography has progressed and transformed over time, and they believe the current system of photography must be superior to that of the past. Th ey are sure they will witness further progress in pho- tography. Th ese are the lessons of history understood by all, and none need inquire any further in order to photograph. Yet photography has a very rich and complex history, which has hidden within it the answers to the fundamentally difficult questions: “What is photography?” and “What is a photograph?” All true photogra- phers should be able to answer these ques- tions for themselves and for others. To do so, they must make deep inquiry into the history of photography. Recognition of the importance of his- tory to the understanding of photography is evidenced in the title and content of the very first manual of photography published FIG. -
Redacted for Privacy E
AN ABSTRACT OF THE THESIS OF RICHARD EUGENE GROSS for the MASTER OF SCIENCE (Name) (Degree) General Science in(Radiological Physics) presented on ,20j /9. (Major) (Date) Title: A STUDY OF RELATIVE SPEEDS OF MEDICAL X-RAY FILM AND INTENSIFYING SCREEN COMBIN4TIONS Abstract approved: Redacted for Privacy E. Dale Trout The objective of this study was to determine the relative speeds of available medical x-ray films exposed directly to x-rays and expo- sed in combination with various types of intensifying screens.The information obtained from this sensitometric data was used to obtain factors by which a radiographic exposure technique with one film- screen combination could be modified to obtain an adequate radio- graph with any of the other films or film-screen combinations. All of the films were exposed using a conventional diagnostic x-ray machine and processed in an automatic processor.The sen- sitometric data were tested by producing radiographs with the various films and film-screen combinations using the basic exposure techni- que and the exposure factors obtained from the relative speeds.The radiographic subject was a phantom made of tissue equivalent plastic which encased human skeletal parts.The radiographic results of the testing indicated that adequate radiographs can be obtained using this data. Assuming that the basic radiograph has an average density of 1.0, a second radiograph using a different film-screen combination will have an average density which will not deviate from 1.0 by more than f 0. 15. A Study of Relative Speeds -
The Techniques and Material Aesthetics of the Daguerreotype
The Techniques and Material Aesthetics of the Daguerreotype Michael A. Robinson Submitted for the degree of Doctor of Philosophy Photographic History Photographic History Research Centre De Montfort University Leicester Supervisors: Dr. Kelley Wilder and Stephen Brown March 2017 Robinson: The Techniques and Material Aesthetics of the Daguerreotype For Grania Grace ii Robinson: The Techniques and Material Aesthetics of the Daguerreotype Abstract This thesis explains why daguerreotypes look the way they do. It does this by retracing the pathway of discovery and innovation described in historical accounts, and combining this historical research with artisanal, tacit, and causal knowledge gained from synthesizing new daguerreotypes in the laboratory. Admired for its astonishing clarity and holographic tones, each daguerreotype contains a unique material story about the process of its creation. Clues from the historical record that report improvements in the art are tested in practice to explicitly understand the cause for effects described in texts and observed in historic images. This approach raises awareness of the materiality of the daguerreotype as an image, and the materiality of the daguerreotype as a process. The structure of this thesis is determined by the techniques and materials of the daguerreotype in the order of practice related to improvements in speed, tone and spectral sensitivity, which were the prime motivation for advancements. Chapters are devoted to the silver plate, iodine sensitizing, halogen acceleration, and optics and their contribution toward image quality is revealed. The evolution of the lens is explained using some of the oldest cameras extant. Daguerre’s discovery of the latent image is presented as the result of tacit experience rather than fortunate accident. -
The Fingerprint Sourcebook
CHAPTER THE PRESERVATION OF FRICTION RIDGES Laura A. Hutchins Contributing author Robert E. May CONTENTS 3 8.1 Introduction 16 8.6 Other Methods of Friction Ridge Preservation 3 8.2 History of Photography 19 8.7 Conclusion 5 8.3 Photography in the Criminal 20 8.8 Reviewers Justice Community 6 8.4 The Fingerprint Camera 20 8.9 References 7 8.5 Modern Photography 8–1 The Preservation of Friction RIdges C H A P T E R 8 8.1 Introduction CHAPTER 8 Inherent in the criminal justice community, and specifi- cally the crime laboratory, is the policy that the information derived from evidence must be preserved to the extent possible. With regard to friction ridge detail, methods of THE PRESERVATION OF preservation include film and digital photography, latent print lifts, and the use of casting material. Although the FRICTION RIDGES two latter methods do create secondary evidence in the form of a lift or cast, the photographing of the friction ridge detail on the lift or the cast is still important to generate ad- Laura A. Hutchins ditional secondary evidence. Certainly with respect to state Contributing author and national labs, evidence submitted with a case must be Robert E. May returned to the contributor. With this in mind, the preserva- tion of all relevant friction ridge information derived from evidence is mandatory, and the production of an archival image enables most of that information to be retained within the case file. 8.2 History of Photography Photography dates back to the time of Aristotle and his study of light, specifically his reference to the passing of light through a pinhole and the creation of a reverse image on the ground (London, 2005, p 368). -
The Essential Reference Guide for Filmmakers
THE ESSENTIAL REFERENCE GUIDE FOR FILMMAKERS IDEAS AND TECHNOLOGY IDEAS AND TECHNOLOGY AN INTRODUCTION TO THE ESSENTIAL REFERENCE GUIDE FOR FILMMAKERS Good films—those that e1ectively communicate the desired message—are the result of an almost magical blend of ideas and technological ingredients. And with an understanding of the tools and techniques available to the filmmaker, you can truly realize your vision. The “idea” ingredient is well documented, for beginner and professional alike. Books covering virtually all aspects of the aesthetics and mechanics of filmmaking abound—how to choose an appropriate film style, the importance of sound, how to write an e1ective film script, the basic elements of visual continuity, etc. Although equally important, becoming fluent with the technological aspects of filmmaking can be intimidating. With that in mind, we have produced this book, The Essential Reference Guide for Filmmakers. In it you will find technical information—about light meters, cameras, light, film selection, postproduction, and workflows—in an easy-to-read- and-apply format. Ours is a business that’s more than 100 years old, and from the beginning, Kodak has recognized that cinema is a form of artistic expression. Today’s cinematographers have at their disposal a variety of tools to assist them in manipulating and fine-tuning their images. And with all the changes taking place in film, digital, and hybrid technologies, you are involved with the entertainment industry at one of its most dynamic times. As you enter the exciting world of cinematography, remember that Kodak is an absolute treasure trove of information, and we are here to assist you in your journey. -
19Th Century Materials, Processes, Technologies
19th Century Materials, Processes, Technologies Photographic Process ID Webinar #1 Image Permanence Institute 2017-2018 Resources Web Resources • Graphics Atlas – www.graphicsatlas.org • George Eastman Museum Photographic Processes Series – YouTube • Lingua Franca: A Common Language for Conservators of Photographic Materials – iTunes App • The Atlas of Analytical Signatures of Photographic Processes – www.getty.edu/conservation/publications_resources/pdf_publications/atlas.html Print Resources • Care and Identification of 19th Century Photographic Prints by James Reilly • Photographs of the Past: Process and Preservation by Bertrand Lavedrine • In the Darkroom: An Illustrated Guide to Photographic Processes Before the Digital Age by Sarah Kennel What is a Photograph? • An Image – Light Sensitivity of Chemical Compounds • Silver Salts • Iron Salts • Chromium Salts • A substrate Salts (Chemistry): an ionic compound which is made up of two groups of oppositely charged ions (positive and Chromium Salt: Potassium dichromate negative) Building Blocks of a Photograph • Image Material • Support • Image Binder* • Support Coating* *not always present Image Material • Metal – Silver – Gold – Platinum • Pigment Supports • Common – Paper – Metal – Glass • Less common – Cloth – Ceramic – Leather Image Binder • Materials – Albumen – Collodion – Gelatin • Purpose – To hold and suspend the image material above support – Sharper image • Properties – Transparent – Ideal for suspensions Albumen print – Each binder has specific properties Support Coating Baryta • Materials – Barium sulfate and gelatin • Purpose – Cover paper fibers • Smooth surface • Reduces light scattering – Higher surface sheen – Sharper image – Higher density in shadows – Improve binder adhesion Gelatin POP Building Blocks of Photographic Prints Image material One layer Support Image material in Binder Two layers Support Image material in Binder Three layers Baryta Support Types of Photographs • Negative • Print • Positive Transparency • Direct Positive Negative A tonally reversed image on a transparent support. -
Gallic Acid and Talbot's Calotype Patent (J. B. Reade, Part
[From ANNALS of SCIENCE Vol. 27, No. 1, March, 1971.] J. B READE, F.R.S., AND THE EARLY HISTORY OF PHOTOGRAPHY PART II. GALLIC ACID AND TALBOT’S CALOTYPE PATENT By R. DEREK WOOD.* [PLATE XIII] THE Rev. Joseph Bancroft Reade, F.R.S. (1801-1870), has been given some prominence in histories of photography as an early independent discoverer of the photographic process, as well as the first person to use sodium thiosulphite (hypo) as a fixer. Part I of this paper 1 presented definitive contemporary evidence that Reade did not discover photography independently of W. H. Fox Talbot: Reade only began his photography, as did many other persons, immediately after Talbot’s disclosure of his photogenic drawing technique in January 1839. But it is also necessary to investigate any evidence regarding Reade’s use, during 1839, of nut -gall infusion to make Talbot’s photogenic paper more sensitive; and to consider if this could have contributed to the discovery of the use of gallic acid as a developing agent in Talbot’s Calotype process. Allegations that Reade had used gallic acid in photography prior to the sealing of the Calotype patent became of some significance during the early 1850s; attention will therefore be given to the Calotype patent lawsuits of 1852 and 1854, and to the agitation that led up to these events. Talbot’s Calotype Patent The Calotype paper process, which was published in 1841, is often considered to be W. H. F. Talbot’s principal contribution to the evolution of the basic system of photography with which we are familiar today. -
Daguerreotypes of Unknown Subjects from the Eastman House’S Study Collection
FACES FROM YESTERDAY: Daguerreotypes of unknown subjects from the Eastman House’s study collection. University and Eastman House researchers are working together to find out how to preserve daguerreotypes in the face of mysterious deterioration. 42 ROCHESTER REVIEW March–April 2013 4.4_RochRev_Mar2013_Daguer.indd 42 2/21/13 1:37 PM A Vanishing Past? Can science save the daguerreotype, the first successful medium of photography? By Kathleen McGarvey BRandOn VICk March–April 2013 ROCHESTER REVIEW 43 4.4_RochRev_Mar2013_Daguer.indd 43 2/21/13 1:38 PM s the microscopes of Holland Cotter of the New York Times the Integrated Nanosystems Center in Wilmot Hall hum and thrum described daguerreotypes as “diamond- with power, a tiny piece of the 19th century—sharply etched, infi- cut empiricism bathed in apparitional Anitely fragile—undergoes their inspection. light” and called the exhibition “pre- “There!” says photo conservator Ralph Wiegandt, pointing ex- cious in the very best sense: literally be- citedly to an image on his screen that looks like a giant insect con- yond price, and almost, but not quite, jured from a science fiction movie. “You’re looking at 33,000 times beyond praise.” magnification.” Just one month after the exhibit The object of his scrutiny is Robert Cornelius’s 1841 daguerreo- opened at the International Center of type of chemist Martin Hans Boyè. Cradled within the electron Photography in New York City, cura- microscope, the daguerreotype begins to give up the secrets of its tors discovered degradation in the con- surface. To the naked eye, it is flecked with small spots. Under the dition of some of the daguerreotypes: a electron microscope’s exacting gaze, it is another world. -
María Fernanda Valverde Advanced Residency Program in Photograph Conservation Contents Preface
María Fernanda Valverde Advanced Residency Program in Photograph Conservation CONTENTS Preface ............................................................................................................................................. 3 Introduction .................................................................................................................................... 4 Paper Negatives ............................................................................................................................... 5 Collodion Glass Plate Negatives ...................................................................................................... 9 Gelatin Dry Plate Negatives ........................................................................................................... 14 Cellulose Nitrate Film Negatives .................................................................................................... 19 Cellulose Acetate Film Negatives................................................................................................... 24 Polyester Film Negatives ................................................................................................................ 29 General Bibliography ..................................................................................................................... 32 Glossary ........................................................................................................................................ 33 Endnotes ...................................................................................................................................... -
1. Before Photography
1. Before Photography Part 1: Discovering Light The most basic aspect of photography is our understanding of how light works, and the first known writings on this come from well over two thousand years ago in China. Mo Ti (later known as Mo Tsu) was a philosopher who lived from 470 to 391 BC. Unlike most philosophers he came from a poor background, perhaps why his teachings were based on the conviction that all men were of equal worth. His followers or 'Moists' were taught that right living demanded they take responsibility for the well being of others and ensured that their actions did not harm others, but practised a universal love for others. If people follow this path, the world is 'ordered and peaceful,' if not, 'the world becomes disorder, violent, and chaotic.' Although difficult to argue against, these ideas did not generally win the affection of the rich and powerful, and Moism soon died out. Mo Ti also thought deeply about the natures of shadows, realising that they were formed by light travelling in straight lines, the first recorded law of optics. He also was able to use this to explain why the images formed when light entered a darkened room through a small aperture were inverted, so can be credited both with recognising the role of an aperture in forming an image and also with an understanding of what later became known as the 'camera obscura' which will be looked at in more detail in a later section. Back in the more primitive west, the Greek philosophers were also noticing similar effects. -
Epublishing Eshph European Society for the History of Photography
ePublishing ESHPh European Society for the History of Photography Nadja Lenz The Hidden Image: Latency in Photography and Cryptography in the 19th Century This essay is an updated version of an article in PhotoResearcher No 17, pp. 3-13. ©2012 European Society for the History of Photography (ESHPh) and Nadja Lenz. ©2012 for the illustrations: see illustration credits All rights reserved. No part of this ePublishing may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording or any other information storage and retrieval system, without the written permission of the publisher. Every effort has been made to locate the copyright holders for the photographs used in the magazine. We welcome any pertaining information. Cover illustration: Adam Diston, untitled, Leven/England, ca. 1855, Gelatin silver print. Museum Ludwig Köln, Fotografische Sammlung SL 866/72 (Collection Robert Lebeck) The Hidden Image: Latency in Photography and Cryptography in the 19th Century Nadja Lenz The fact that a latent image – in the form of a latent script image –exists in early analogue photography as well as in early cryptography encourages a comparative study.1 The blackening of silver salts with light and the reaction of gallic acid with metal- lic salts causing a latent script image were already known in cryptography centuries before the discovery of photography. Recipes for so-called sympathetic scripts2 were based on these chemical processes. But, to which extent did the inventors of photography deal with cryptog- raphy? What kind of relationship exists between cryptography and photography and how are these two processes similar to each other? History of concepts The term ’latency’ comes from the Latin word ‘latens’, and means ‘hidden’.