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The Panasonic Leica DG Vario-Elmar 100–400 mm f / 4.0-f / 6.3 lens is a digital compact telephoto zoom lens for Micro Four Thirds system cameras. It is a varifocal lens branded with the German label Leica , but is currently manufactured in China by Panasonic , previously Japan.
The Turner-Sclerometer test consists of measuring the amount of load required to make a scratch. [1] [2] In test a weighted diamond point is drawn, once forward and once backward, over the smooth surface of the material to be tested. The hardness number is the weight in grams required to produce a standard scratch.
The Sony FE 100-400mm F4.5-5.6 GM OSS is a premium, variable maximum aperture full-frame telephoto zoom lens for the Sony E-mount, announced by Sony on April 19, 2017. [ 1 ] [ 2 ] The FE 100-400mm GM lens is currently the second longest focal length native zoom lens offered for the Sony E-mount, only surpassed by the Sony 200-600mm G lens.
The Sigma 50-500mm f / 4-6.3 EX DG HSM is a super-telephoto zoom lens produced by Sigma Corporation. It contains four SLD (Special Low Dispersion) glass elements to provide correction for chromatic aberration.
[3] [4] The Mohs scale is based on relative scratch hardness of different materials; with talc assigned a value of 1 and diamond assigned a value of 10. [5] Mohs's scale had two limitations: it was not linear, and most modern abrasives fall between 9 and 10.; [6] [7] so, later scientists attempted to increase resolution at the harder end of the ...
The Sigma APO 120-400mm F4.5-5.6 DG OS HSM lens is a super-telephoto lens produced by Sigma Corporation. It contains three SLD (Special Low Dispersion) glass elements to provide correction for chromatic aberration. It is aimed toward advanced consumers.
The seemingly "simple" elementary brain-teaser asks one student "Reasonableness: Marty ate 4/6 of his pizza and Luis ate 5/6 of his pizza. Marty ate more pizza than Luis.
Xcerra Corporation (formerly LTX-Credence Corporation) was an American semiconductor Automatic Test Equipment (ATE) vendor, founded in 1976 in (co-founder) Sol Max's basement, later moving to the Balco building in Newton & GTE building 3 in Needham, then the KLH building on University Ave. in Westwood and currently headquartered on University Ave. in Norwood, Massachusetts (Greater Boston area).