Excerpt from A New Method for the Measurement of Photographic Filter Factors A new method is described whereby the filter factors for ortho chromatic and panchromatic plates with various filters may be determined with apparatus using a single source of light. The energy distribution of the lamp is corrected to closely approximate that of average noon sunlight, so that the values obtained are applicable in actual practice. The test procedure is described, and an example given to illus trate the method of calculating the ...
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Excerpt from A New Method for the Measurement of Photographic Filter Factors A new method is described whereby the filter factors for ortho chromatic and panchromatic plates with various filters may be determined with apparatus using a single source of light. The energy distribution of the lamp is corrected to closely approximate that of average noon sunlight, so that the values obtained are applicable in actual practice. The test procedure is described, and an example given to illus trate the method of calculating the factor. Some of the most important precautions necessary for accurate work are enumerated. Experimental evidence is given to show that the accuracy of the instrument is distinctly greater than the emulsions are uniform. Suggestions as to the possible applicability of the apparatus to other problems are made. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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Add this copy of A New Method for the Measurement of Photographic Filter to cart. $52.71, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2018 by Forgotten Books.
