What Does Minimum Aperture Mean When Talking About Cameras and Lenses?
The term ‘minimum aperture’ refers to the smallest possible hole that can be formed by the aperture blades in a photographic lens. Generally at it’s minimum aperture a lens will produce extremely sharp images with a wide depth of field, but will allow a much reduced amount of light to strike the photographic medium. A lens with an minimum aperture of f/64 for example would produce extremely sharp images with a very wide depth of field. The minimum aperture of a lens is usually listed in the lens’ specifications along with the maximum aperture for example f/2.0-f/22.