Assertion: lens's aperture | /r/HasProperty | fixed
Facets:
Source sentences:
text: What they are: Typically covering a focal length between 24 mm and 35 mm, Wide Angle lenses are available as primes or zooms and come with either variable or fixed maximum aperture.
text: Back in the early days of photography, some lenses had fixed apertures.
text: Such lenses are very lightweight and can easily deliver very long focal lengths but they can only deliver a fixed aperture and have none of the benefits of being able to stop down the aperture to increase depth of field.