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  2. Extension tube - Wikipedia

    en.wikipedia.org/wiki/Extension_tube

    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.

  3. Nikonos - Wikipedia

    en.wikipedia.org/wiki/Nikonos

    Offered by third parties; no Nikon extension tubes were produced. Nikon Close Up Kit, which included a close-up lens that attached to the front of either the UW 28 mm, W 35 mm, or W 80mm Nikonos lenses, a frame support bracket, and three field frames (one for each lens) to produce near-macro image ratios (approx range of 1:5 to 1:3, depending ...

  4. Close-up lens - Wikipedia

    en.wikipedia.org/wiki/Close-up_lens

    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:

  5. Macro photography - Wikipedia

    en.wikipedia.org/wiki/Macro_photography

    "Macro" lenses specifically designed for close-up work, with a long barrel for close focusing and optimized for high reproduction ratios, are one of the most common tools for macro photography. (Unlike most other lens makers, Nikon designates its macro lenses as "Micro" because of their original use in making microform.) Most modern macro ...

  6. Nikon Amusing Lenses - Wikipedia

    en.wikipedia.org/wiki/Nikon_Amusing_Lenses

    The Nikon Amusing Lenses (ニコン おもしろレンズ工房) are a limited production set of four toy lenses for the Nikon F mount sold exclusively in Japan. The Amusing Lenses were designed by Kouichi Ohshita and introduced in 1995, then discontinued in 1996; they were re-released in 2000 as the Fun Fun LensSet , which was discontinued ...

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