halation

[ hey-ley-shuhn, ha- ]

noun

, Photography.

1. 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.

halation

/ həˈleɪʃən /

noun

1. photog fogging usually seen as a bright ring surrounding a source of light: caused by reflection from the back of the film

Word History and Origins

Origin of halation¹

First recorded in 1855–60; hal(o) + -ation

Word History and Origins

Origin of halation¹

C19: from halo + -ation

Example Sentences

Halation is the term used to denote the spreading of light beyond its proper place on the negative.

From Project Gutenberg

The first advantage, which I soon discovered, is their entire freedom from halation.

From Project Gutenberg

The same mixture makes an excellent backing for dry plates to prevent halation.

From Project Gutenberg

Nor did the disturbing influence of the glare and halation of Kimberley only affect the vision of the diamond men within the town.

From Project Gutenberg

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.

From Project Gutenberg