Hypersensitizing Commercial Panchromatic Plates (Classic Reprint) - Couverture souple

Burka, Samuel Moses

9781333369514: Hypersensitizing Commercial Panchromatic Plates (Classic Reprint)

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ISBN 10 : 1333369514 ISBN 13 : 9781333369514

Editeur : Forgotten Books, 2018

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Boost your color photography with a science-backed method for faster panchromatic plates. This study documents how ammonia treatments can dramatically raise plate speed across several brands, including modern panchromatic varieties, orthochromatic types, and spectrum-process emulsions, with real-world testing in controlled labs.

This dissertation explains the methods of sensitometry, the role of dyestuffs in emulsions, and the practical results of ammonia bathing. It compares different developers, examines keeping qualities, and presents spectral sensitivity data to help photographers choose the right plate and process for aerial and high-detail work.

How sensitometry is used to measure plate speed and brightness response

Which plate families show the strongest speed gains after ammonia treatment

Notes on processing, drying, and maintaining image quality during experiments

Spectral data and practical implications for aerial photography and color work

Ideal for readers of photography science, vintage imaging techniques, and lab-informed photo processing.

Les informations fournies dans la section � Synopsis � peuvent faire r�f�rence � une autre �dition de ce titre.

�diteur: Forgotten Books
Date d'�dition: 2018
Langue: anglais
ISBN 10: 1333369514
ISBN 13: 9781333369514
Reliure: Broch�
Nombre de pages: 32
Coordonn�es du fabricant: Copytech (UK) Ltd, Trading as Printondemand-worldwide.com
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Hypersensitizing Commercial Panchromatic Plates (Classic Reprint)

Samuel Moses Burka

Edit� par Forgotten Books, 2018

ISBN 10 : 1333369514 ISBN 13 : 9781333369514

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Vendeur : Forgotten Books, London, Royaume-Uni

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Paperback. Etat : New. Print on Demand. This book provides a comprehensive overview of hypersensitizing commercial panchromatic plates. The author analyzes the effects of ammonia on the sensitivity of panchromatic plates to different wavelengths of light. The author uses three methods of sensitometry to study the increase in speed and sensitivity, including the three-color screen method, the spectrograph method, and the Hurter and Drifeld method. The author explains that by bathing commercial panchromatic plates in a solution of alcohol, water, and ammonia, the speed to white light is increased 100% in nearly all cases, and the sensitivity in the red is extended by 100 or more Angstrom units. By bathing without alcohol, the speed is further increased. However, these plates should be used immediately after drying. This text is a valuable resource for photographers, scientists, and anyone interested in the history and science of photography. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. N� de r�f. du vendeur 9781333369514_0

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