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Extension tubes are sometimes confused with teleconverters, an optical component (i.e., containing lenses) designed to increase effective focal length. A close-up lens also enables focusing closer for macro photography but, unlike an extension tube, a close-up lens actually is an optical element.
Macro photography (or photomacrography [1] [2] or macrography, [3] and sometimes macrophotography [4]) is extreme close-up photography, usually of very small subjects and living organisms like insects, in which the size of the subject in the photograph is greater than life-size (though macrophotography also refers to the art of making very ...
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:
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The new Ecotec motors replaced the GM 122 Pushrod Engine (2.2 L OHV) in base models in 2003, and became the sole engine choice in the entire Cavalier line-up until 2005 when the Chevrolet Cavalier was replaced by the Chevrolet Cobalt. A GM Eaton M45 Supercharger kit was also offered for the Z24 trim as well. The supercharger kit was developed ...
Our hearts are full watching Jonathan Knight's latest video he posted to Instagram. According to the host of HGTV's Farmhouse Fixer , there has been a feral cat running around his back deck every ...
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