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  2. List of standard zoom lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_standard_zoom_lenses

    Lens mounts Focal length [a] Aperture OIS Weight Length Release year Availability Wide Tele Wide Tele Samsung 16-50mm F2-2.8: NX: 24mm 75mm f / 2.0 f / 2.8 Yes 622g 97mm 2014 Discontinued: Fujifilm 16-55mm F2.8 II X: 24mm 83mm f / 2.8 f / 2.8 No 410g 95mm 2024 Current: Sony 16-55mm F2.8 E: 24mm 83mm f / 2.8 f / 2.8 No 494g 100mm 2019 Current ...

  3. Apochromat - Wikipedia

    en.wikipedia.org/wiki/Apochromat

    An apochromat, or apochromatic lens (apo), is a photographic or other lens that has better correction of chromatic and spherical aberration than the much more common achromat lenses. The prefix apo- comes from the Greek preposition ἀπό- , meaning free from or away from.

  4. List of Minolta A-mount lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_Minolta_A-mount_lenses

    Minolta AF 100–200 mm f /4.5, typical of original lens styling, with narrow straight-ribbed focusing ring at front, distance window, diagonal rubber-ribbed zoom ring. While most auto-focus lens designs were new developments, some optical constructions were derived from Minolta SR-mount lenses.

  5. Samsung NX-mount - Wikipedia

    en.wikipedia.org/wiki/Samsung_NX_45mm_F1.8

    The Samsung NX-mount is the lens mount used on NX series mirrorless interchangeable lens cameras by Samsung. The mount was first implemented in the Samsung NX10 , and Samsung initially referred to the NX line as 'hybrid digital cameras', citing their combination of attributes of both DSLR and compact cameras.

  6. Refracting telescope - Wikipedia

    en.wikipedia.org/wiki/Refracting_telescope

    A refracting telescope (also called a refractor) is a type of optical telescope that uses a lens as its objective to form an image (also referred to a dioptric telescope). The refracting telescope design was originally used in spyglasses and astronomical telescopes but is also used for long-focus camera lenses .

  7. Sigma 70-300mm f/4–5.6 APO DG Macro lens - Wikipedia

    en.wikipedia.org/wiki/Sigma_70-300mm_f/4–5.6...

    The Sigma 70-300mm F4-5.6 APO DG Macro lens is a consumer-level, telephoto zoom lens made by Sigma Corporation. [1] Different versions of this lens are produced that work with cameras from Canon, Nikon, Pentax, Konica Minolta, Sony and Sigma. Additionally, Olympus' 70–300 f/4–5.6 lens for Four-Thirds has the same optical design and ...

  8. Samsung NX series - Wikipedia

    en.wikipedia.org/wiki/Samsung_NX_series

    The Samsung NX series was a series of APS-C mirrorless interchangeable-lens cameras (with the exception of Samsung NX mini that sports a 1-inch sensor) with Samsung NX lens mounts from Samsung Electronics, introduced in 2010.

  9. List of largest optical refracting telescopes - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_optical...

    The Swedish 1-m Solar Telescope, with a lens diameter of 43 inches, is technically the largest, with 39 inches clear for the aperture.The second largest refracting telescope in the world is the Yerkes Observatory 40 inch (102 cm) refractor, used for astronomical and scientific observation for over a century.