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  2. Extension tube - Wikipedia

    en.wikipedia.org/wiki/Extension_tube

    An extension tube, sometimes also called a closeup tube or an extension ring, is used with interchangeable lenses to increase magnification. This is most often used in macro photography . [ 1 ]

  3. Ring flip - Wikipedia

    en.wikipedia.org/wiki/Ring_flip

    As stated above, a chair flip is a ring inversion specifically of cyclohexane (and its derivatives) from one chair conformer to another, often to reduce steric strain.The term, "flip" is misleading, because the direction of each carbon remains the same; what changes is the orientation.

  4. List of Nikon F-mount lenses with integrated autofocus motor

    en.wikipedia.org/wiki/List_of_Nikon_F-mount...

    All Nikon zoom AF-lenses have focal length encoders added. Nikon AF-P: The lens contains a pulse motor (utilizing stepping motors) to focus smoother and quieter than previous drive systems. Nikon AF-I, Sigma/Tamron/Tokina: no designation: The lens contains an integrated focus electric motor. The Nikon type was produced from 1992 to 1996 and is ...

  5. C mount - Wikipedia

    en.wikipedia.org/wiki/C_mount

    The Nikon 1 series and the Pentax Q series can use C-mount lenses without vignetting. C mount was created by Bell & Howell for their Filmo 70 cine cameras. [2] The earliest Filmos had slightly different mounts, known as A mount, and B mount. C mount was found on Filmo 70 cameras with serial numbers 54090 and higher, [3] probably from about 1926.

  6. Macro photography - Wikipedia

    en.wikipedia.org/wiki/Macro_photography

    This ring attaches to the filter thread on the front of a lens and makes it possible to attach the lens in reverse. Excellent quality results up to 4x life-size magnification are possible. For cameras with all-electronic communications between the lens and the camera body specialty reversing rings are available which preserve these communications.

  7. T-mount - Wikipedia

    en.wikipedia.org/wiki/T-mount

    The T-mount is a standard lens mount for cameras and other optical assemblies. The usual T-mount is a screw mount using a male 42×0.75 (42 mm diameter, 0.75 mm thread pitch) metric thread on the lens with a flange focal distance of 55 mm and a mating female 42mm thread on a camera adapter or other optical component.

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