halation
a blurred effect around the edges of highlight areas in a photographic image caused by reflection and scattering of light through the emulsion from the back surface of the film support or plate.
Origin of halation
1Words Nearby halation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use halation in a sentence
halation is the term used to denote the spreading of light beyond its proper place on the negative.
Harper's Round Table, October 8, 1895 | VariousThe first advantage, which I soon discovered, is their entire freedom from halation.
The same mixture makes an excellent backing for dry plates to prevent halation.
The Evolution of Photography | John WergeNor did the disturbing influence of the glare and halation of Kimberley only affect the vision of the diamond men within the town.
A Handbook of the Boer War | Gale and Polden, LimitedAs at Sannah's Post, so again at Lindley the halation of a word or two in his orders fogged the image on his retina.
A Handbook of the Boer War | Gale and Polden, Limited
British Dictionary definitions for halation
/ (həˈleɪʃən) /
photog fogging usually seen as a bright ring surrounding a source of light: caused by reflection from the back of the film
Origin of halation
1Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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