What does halation mean?
Halation is the soft ring or glow that can appear around a bright object in a photograph, film, or other optical image. It results when intense light diffracts or scatters through the photographic emulsion or the imaging system, creating a halo beyond the edges of the brightest areas. The effect is especially associated with analog photography and film, where it can give highlights a luminous, atmospheric appearance, although similar optical effects occur in cameras, lenses, and other imaging systems. In everyday language, “halation” also refers more broadly to the formation of a luminous ring. The term is relatively formal and technical, but it is useful when discussing the distinctive glow surrounding highlights in photographs. Its history connects the modern photographic sense with the familiar word “halo,” through the English combination of “halo” and the suffix “-ation.”
nounA luminous ring or glow surrounding a bright object or light source, especially in a photograph or film. The effect is caused by light diffracting or scattering within the photographic emulsion or through a lens.
- The luminous ring or glow that appears around a bright object or light source in a photograph, film, or other optical image.
- The optical process of light diffracting or scattering to create such a ring or glow.
"The bright streetlamp created a soft halation in the night photograph."
"The sunlit window shows pronounced halation around its brightest panes."
"In discussions of analog photography, halation is often described as a soft, dreamlike halo around highlights."
The plural is uncommon; the word is usually used as an uncountable term for the optical effect, though countable plural uses occur.
"The image exhibited faint halations around the strongest highlights."
That mysterious glow around a bright light in an old photograph has a name: halation, the charming optical signature of light bouncing through film.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Words that share this root
How halation is actually used
The word is primarily used in photography, film, optics, and related technical contexts. In general use, it is formal and may sound literary or specialized; it is less common than the everyday word “halo.”
Easily confused with halation
A halo is the ring or glow itself, whereas halation more specifically names the photographic or optical effect that produces such a ring around a bright subject.
A corona can refer to the sun's outer atmosphere or to electrical discharge around a conductor, while halation usually refers to a photographic or optical glow.