Aperture is the opening in a lens through which light passes to reach the camera’s sensor. It is measured in f-stops, which are denoted by the letter “f” followed by a number, such as f/2.8, f/5.6, or f/16.
The aperture setting controls the depth of field in an image, which is the range of distances that appear sharp. A wider aperture (lower f-number) results in a shallower depth of field, while a narrower aperture (higher f-number) results in a deeper depth of field.
