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A superlens, or super lens, is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is a feature of conventional lenses and microscopes that limits the fineness of their resolution depending on the illumination wavelength and the numerical aperture (NA) of the objective lens.
This is a list of lenses designed for APS-C mirrorless cameras that have an optical zoom ratio greater than 7×. For comparison, the longest superzoom lens designed for DSLRs was the Tamron 18-400mm F3.5-6.3 for EF and F mounts, which had a 22× optical zoom ratio.
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Sigma 18-200mm/3.5-6.3 DC lens attached to a Canon EOS 400D A Panasonic TZ18 compact digital camera's Leica lens with a maximum focal length of 384mm (35mm equiv.) and minimum of 24mm A superzoom or ultrazoom lens is a type of photographic zoom lens with unconventionally large focal length factors, typically ranging from wide angle to extreme ...
Canon PowerShot SX720 HS. This is a list of superzoom compact cameras, also known as travel zoom cameras. [1] [2] These are small fixed-lens "point-and-shoot" digital cameras that have a high optical zoom ratio.
A zoom lens is a system of camera lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed-focal-length (FFL) lens . A true zoom lens or optical zoom lens is a type of parfocal lens, one that maintains focus when its focal length changes. [1]
It was the first super-wide angle zoom lens for still cameras (most 35mm SLRs). Previously, combining the complexities of rectilinear super-wide angle lenses, retrofocus lenses and zoom lenses seemed impossible. The Sigma's all-moving eleven element/seven group/three cell formula was a triumph of computer-aided design and multicoating. [114]
A photographic lens or objective is an integrated system comprising one or more simple optical lens elements, which produces an image of a distant object. The main article for this category is Photographic lens .