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

halation ha·la·tion (hā-lā’shən)


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