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This term is often used to address sunglasses and eyeglasses. They feature a camera lens and are capable of recording short video segments and syncing with a smartphone to upload to the user's online account. They were developed and manufactured by Snap Inc., and announced on September 23, 2016. The smartglasses were released on November 10, 2016.
That distance is sometimes given on the filter in millimeters. A +3 close-up lens has a maximal working distance of 0.333 m or 333 mm. The magnification is the focal distance of the objective lens (f) divided by the focal distance of the close-up lens; i.e., the focal distance of the objective lens (in meters) multiplied by the diopter value (D) of the close-up lens:
Rodenstock lenses for large-format cameras; L–R: Grandagon-N 115 mm f /6.8, Apo-Sironar-S 210 mm f /5.6, Grandagon-N 90 mm f /4.5 Rodenstock Photo Optics traces its origins to a mechanical workshop founded in 1877 by Josef Rodenstock and his brother Michael in Würzburg, Germany.
A close-up lens is a single or two-element converging lens used for close-up and macro photography, and works in the same way as spectacles used for reading. The insertion of a converging lens in front of the taking lens reduces the focal length of the combination.
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In the field of optical lenses, Rodenstock won three Silmo d’Or Awards in 2012. [25] The Rodenstock Perfection R8005 spectacle frame won the category "Special Mention for Outstanding Design Quality" at the 2014 German Design Award. [26] In 2020, the P‘8362 Porsche Design glasses won the iF Product Design Award by Industrie Forum Design ...
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