guāng​quān

aperture

光圈 guāng​quān
aperture noun
the adjustable opening in an optical instrument, such as a camera lens, that controls the amount of light entering

When shooting portraits, a large aperture is usually used to blur the background.

halo noun
a circle or ring of light, such as an aureole or corona around a celestial body or religious figure

A beautiful halo appeared around the moon.

Frequency

Movie subtitles
0.420 per million appears in 0% of films
Written text
4.48 per million

Sources

Definitions
CC-CEDICT