noun
halation; halo effect in photography
Technical term in photography and optics for the halo or glow around bright areas caused by light scattering in the film or sensor. Also used metaphorically for a similar visual effect in other contexts.
逆光で撮ると、ハレーションが起きやすい。
When shooting against the light, halation tends to occur.
このレンズはハレーションを抑えるコーティングが施されている
This lens has a coating to reduce halation.