halation
[ hey-ley-shuh n, ha- ]
/ heɪˈleɪ ʃən, hæ- /
noun Photography.
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.
Words nearby halation
Example sentences from the Web for halation
Nor 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, LimitedThe first advantage, which I soon discovered, is their entire freedom from halation.
Halation is the term used to denote the spreading of light beyond its proper place on the negative.
As 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
halation
/ (həˈleɪʃən) /
noun
photog
fogging usually seen as a bright ring surrounding a source of light: caused by reflection from the back of the film
Word Origin for halation
C19: from
halo +
-ation
Medical definitions for halation
halation
[ hā-lā′shən ]
n.
Blurring of the visual image due to glare from strong illumination.
A blurring or spreading of light around bright areas on a photographic image.