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see photographic processingphotographic processing,
set of procedures by which the latent, or invisible, image produced when a photographic film is exposed to light is made into a permanent visible image.
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a photographic image in which the relative distribution of brightness, in black-and-white photography, or colors, in color photography, corresponds to the distribution in the object photographed. Thus, a positive is opposed to a negative, in which there is an inverse distribution of brightness or a registration of the image in complementary colors. Two types of positives are distinguished—those produced on photographic materials with an opaque support, such as paper or ceramic material, and those produced on photographic materials with a transparent support, such as glass or film; the second type comprises diapositives and motion-picture film positives intended to be viewed against a light source or to be projected onto a screen.

Positives are obtained by contact or projection printing onto positive photographic materials—the positive process. With this process, a large number of positives can be made from a single negative; with projection printing, positives can be made any size. Positives produced as a single copy, such as amateur motion-picture films and slides, are made on reversal materials by reversal process. In color cinematography, in addition to the negative-positive and reversal processes, the imbibition process is used, which produces positives from three color-separation black-and-white negatives.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


Having fewer electrons than normal, and hence having ability to attract electrons.
(graphic arts)
Having the same rendition of light and shade as in the original scene.
Having value greater than zero.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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