Assertion: lens's aperture | /r/HasProperty | low f-stop number
Facets:
Source sentences:
text: A large aperture (low f-stop number) keeps a subject in sharp focus by blurring out the foreground and background, creating what’s known as bokeh in photography.
text: Practically speaking, this means lenses with larger apertures (low f-stop numbers) tend to be physically larger than their small aperture (high f-stop number) counterparts.