Search results
Results from the WOW.Com Content Network
A burning apparatus consisting of two biconvex lens. A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction.A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis.
Different kinds of camera lenses, including wide angle, telephoto and speciality. A camera lens (also known as photographic lens or photographic objective) is an optical lens or assembly of lenses (compound lens) used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically.
The first use of the word lens to designate a specific genus was in the 17th century by the botanist Tournefort. [3] The word "lens" for the lentil is of classical Roman or Latin origin, possibly from a prominent Roman family named Lentulus, just as the family name " Cicero " was derived from the chickpea, Cicer arietinum , and " Fabia " (as in ...
Lens (geometry), a geometric shape formed from two arcs; Lens (geology), a body of ore or rock that is thick in the middle and thin at the edges; Lens (hydrology), a layer of fresh water derived from rainfall, overlying saline groundwater; Kamera lens (biology), a unicellular, flagellate organism and the only species of the genus Kamera. Ice lens
The lens aperture is usually specified as an f-number, the ratio of focal length to effective aperture diameter (the diameter of the entrance pupil). A lens typically has a set of marked "f-stops" that the f-number can be set to. A lower f-number denotes a greater aperture which allows more light to reach the film or image sensor.
This is any lens with a focal length longer than the diagonal measure of the film or sensor. [121] The most common type of long focus lens is the telephoto lens, a design that uses a special telephoto group to be physically shorter than its focal length. [122] Modern zoom lenses may have some or all of these attributes.
The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.
Lens flare on Borobudur stairs to enhance the sense of ascending. A lens flare is often deliberately used to invoke a sense of drama. A lens flare is also useful when added to an artificial or modified image composition because it adds a sense of realism, implying that the image is an un-edited original photograph of a "real life" scene.