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21Zoom lens — Nikkor 28 200 mm zoom lens, extended to 200 mm at left and collapsed to 28 mm focal length at right A zoom lens is a mechanical assembly of lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed… …
22Media Lens — David Edwards and David Cromwell of Media Lens receive the Gandhi Foundation Peace Award, 2007 Media Lens is a British media analysis website established in 2001 by David Cromwell and David Edwards. Regular media alerts are issued with the… …
23Luneburg lens — Cross section of the standard Luneburg lens, with blue shading proportional to the refractive index A Luneburg lens (originally Lüneburg lens, often incorrectly spelt Luneberg lens …
24Through a Naked Lens — is an American play by author George Barthel. It received its world premiere Off Broadway at the Wings Theatre in New York City. The play itself uses historical evidence and imagined circumstances to depict the rise of early Hollywood film star… …
25Comparison of digital single-lens reflex cameras — This list is incomplete; you can help by expanding it. Following list compares main features of digital single lens reflex cameras (DSLRs). Order of this list should be firstly by manufacturer alphabetically, secondly from high end to low end… …
26Progressive lens — View through a progressive lens at some distance. In normal use, a much smaller section of the glass is used, so that the distortion is much smaller. Progressive spectacle lenses, also called progressive addition lenses (PAL), progressive power …
27Secondary lens — Primary lens redirects here. See also prime lens. In photography, a secondary lens is a lens designed to be used in conjunction with another lens, called the primary lens.A secondary lens may be designed to be used either in front of the primary… …
28Telecentric lens — A telecentric lens is a compound lens which has its entrance or exit pupil at infinity; in the prior case, this produces an orthographic view of the subject. This means that the chief rays (oblique rays which pass through the center of the… …
29Canon L lens — An L lens is a line of SLR photography lenses made by Canon.L lenses are Canon s top of the line lenses. The L officially stands for Luxury , a reference to the lenses high price and build. Some have rumoured that L originally stood for… …
30Canon EF 24-70mm f/2.8L lens — Infobox photographic lenses name = EF 24 70mm f/2.8L maker = Canon feat is = n feat usm = y feat sbf = n feat macro = n feat special = type = z application = Pro Standard Zoom flength = 24 70mm fov = 1.0 aperture = f/2.8 f/22 groups = 13 elements …
