Assertion: lens's aperture | /r/HasProperty | small
Facets:
value: pretty
type: DEGREE
Source sentences:
text: Fixed-focus lenses require small apertures
text: Larger maximum aperture (smaller f-number) facilitates photography in lower light, and a shallower depth of field.
text: Using a large aperture (small number) may actually put the background out of focus too much.
text: On the opposite end of the spectrum, a small aperture (remember, small pupil size) is measured using a high f-stop number, such as f/22.
text: Larger apertures (smaller f-numbers) provide a much shallower depth of field than smaller apertures, other conditions being equal.
text: Those apertures are small enough to block light from the edges of a lens, but they aren’t so small that diffraction is a significant problem.
text: For example, if the largest possible aperture on your lens is pretty small, something like f/5.6 or f/6.3, your camera won’t be able to use a large aperture to help it focus.
text: As shown, a pinhole "lens" is simply a small aperture that blocks most rays of light, ideally selecting one ray to the object for each point on the image sensor.
text: The aperture affects not only the amount of light that passes through the lens, but also the depth of field of the resulting image: a larger aperture (a smaller f-number, e.g. f/2.0) will have a shallow depth of field, while a smaller aperture (a larger f-number, e.g. f/11) will have a greater depth of field.