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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 ...
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.
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.
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.
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 ...
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.
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.
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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