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An aspheric biconvex lens. An aspheric lens or asphere (often labeled ASPH on eye pieces) is a lens whose surface profiles are not portions of a sphere or cylinder.In photography, a lens assembly that includes an aspheric element is often called an aspherical lens.
At other apertures, it "may not be the sharpest lens around but it offers a good and very affordable introduction into shallow depth-of-field photography". [2] Camera Labs evaluated the lens as delivering "very good results" when "viewed in isolation", and giving a sharper image in the corners than a Nikkor 85mm f1.4G, but losing to it in the ...
10 mm f /5.6 OP (1968), the first fisheye to feature orthographic projection, which was also the first lens to feature an aspherical element [40] 6 mm f /5.6 (1969), the first fisheye to feature a 220° field of view; [7] the patent accompanying this lens includes a design for a lens with a 270° field of view. [39]
180-600 mm focal length (approximately equivalent field of view of a 27-900 mm lens when used on a DX format camera) Autofocus using a stepping motor (STM), focus-by-wire manual focus ring; 25 elements in 17 groups (including 6 ED glass, 1 aspherical lens element and a fluorine-coated front lens element) 9-blade rounded diaphragm
Aspherical lens, a type of lens assembly used in photography which contains an aspheric lens, sometimes referred to as ASPH Topics referred to by the same term This disambiguation page lists articles associated with the title Aspherical .
Other lenses for the Contax included the Biotar, Biogon, Orthometar, and various Tessars and Triotars. The last important Zeiss innovation before the Second World War was the technique of applying anti-reflective coating to lens surfaces invented by Olexander Smakula in 1935. [8] A lens so treated was marked with a red "T", short for "Transparent".
The Canon FD 55mm ƒ/1.2 AL is a camera lens made by Canon, first introduced alongside the Canon F-1 single-lens reflex camera in March 1971. It was the first lens for any 35mm SLR system to incorporate an aspherical element. [1] The lens was manufactured until 1980.
A Luneburg lens is a ball lens that has a radially varying index of refraction that follows a certain profile. A Luneberg lens has foci outside the lens and can perfectly image a spherical object. Luneberg lenses designed for radio wavelengths are used in some radar systems and radio antennas.