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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. Many lens designs have been ...
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.
For decades, combining the complexities of rectilinear super-wide angle lenses, retrofocus lenses and zoom lenses seemed impossibly difficult. Sigma did the impossible [ 585 ] and reached a 91° maximum field of view for 35 mm SLRs with an all-moving eleven element formula through the maturation of computer-aided design and multicoating. [ 586 ]
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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 ...
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.
The Vietnamese Wikipedia initially went online in November 2002, with a front page and an article about the Internet Society.The project received little attention and did not begin to receive significant contributions until it was "restarted" in October 2003 [3] and the newer, Unicode-capable MediaWiki software was installed soon after.
Tiến lên (Vietnamese: tiến lên, tiến: advance; lên: to go up, up; lit. ' go forward '; also romanized Tien Len) is a shedding-type card game originating in Vietnam. [1] It may be considered Vietnam's national card game, and is common in communities where Vietnamese migration has occurred.