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  2. Progressive lens - Wikipedia

    en.wikipedia.org/wiki/Progressive_lens

    Different designs of progressive lenses have more or less of this distortion. Fitting: Progressive lenses require careful placement relative to the wearer's pupil centre for a distance-viewing reference position. Incorrect specification of the fitting location can cause problems for the wearer including (depending on the design of the lens ...

  3. Photographic lens design - Wikipedia

    en.wikipedia.org/wiki/Photographic_lens_design

    The design of photographic lenses for use in still or cine cameras is intended to produce a lens that yields the most acceptable rendition of the subject being photographed within a range of constraints that include cost, weight and materials.

  4. Camera lens - Wikipedia

    en.wikipedia.org/wiki/Camera_lens

    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.

  5. Lens - Wikipedia

    en.wikipedia.org/wiki/Lens

    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.

  6. List of abbreviations in photography - Wikipedia

    en.wikipedia.org/wiki/List_of_abbreviations_in...

    Anti-reflection coating of lenses to reduce transmission losses. May also stand for meter coupling or meter-coupled lenses. Whilst being a generic term, the designation in the latter meaning is mostly used to describe a generation of Minolta SR-mount lenses implementing this feature. MDF or MFD: Minimum Focusing Distance. Minimum distance from ...

  7. Canon L lens - Wikipedia

    en.wikipedia.org/wiki/Canon_L_lens

    The 70-200 mm f/2.8L lens. Canon's series of L lenses (Luxury lenses) are a professional line of photography lenses made by Canon.Canon has sold zoom and prime L-series lenses for the discontinued FD lens mount, for the current EF lens mount used on all Canon EOS SLR cameras and for the RF mount used on mirrorless interchangeable-lens cameras.

  8. Varilux - Wikipedia

    en.wikipedia.org/wiki/Varilux

    French Varilux Logo. Varilux is a brand name belonging to Essilor International, a producer of corrective lenses.The first version of the lens was invented by Bernard Maitenaz and released in 1959, and was the first modern [clarification needed] progressive lens to correct presbyopia.

  9. Prime lens - Wikipedia

    en.wikipedia.org/wiki/Prime_lens

    Prime lenses have large apertures, compared with zoom lenses. These 85 mm lenses have maximum apertures of f /1.8 (left) and f /1.2 (right). In film and photography, a prime lens is a fixed focal length photographic lens (as opposed to a zoom lens), typically with a maximum aperture from f2.8 to f1.2. The term can also mean the primary lens in ...

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