halation
[ hey-ley-shuhn, ha- ]
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
USE 1
To minimize halation, photographers sometimes choose specific types of film or adjust their camera settings for better control over light diffusion.
USE 2
When reviewing the old film photographs, the photographer noted the halation that gave the images a dreamlike quality.
USE 3
Halation often occurs in night photography when bright light sources are surrounded by a glowing haze.
