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  2. Distortion (optics) - Wikipedia

    en.wikipedia.org/wiki/Distortion_(optics)

    Simulated animation of globe effect (right) compared with a simple pan (left) In photography, distortion is particularly associated with zoom lenses, particularly large-range zooms, but may also be found in prime lenses, and depends on focal distance – for example, the Canon EF 50mm f / 1.4 exhibits barrel distortion at extremely short focal distances.

  3. AC Lens - Wikipedia

    en.wikipedia.org/wiki/AC_Lens

    AC Lens has been named to the INC. 5000 [5] and the Columbus Business First Fast 50. [6] In May 2010, CEO Peter Clarkson was named a finalist for the Ernst & Young Entrepreneur of the Year Award [7] for south central Ohio and Kentucky.

  4. List of Minolta A-mount lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_Minolta_A-mount_lenses

    While the "(D)" designation is used on the box and in the documentation, the lenses just feature a "D" instead. Requires 8 lens contacts; lenses with only 5 contacts cannot support this feature. DT "Digital Technology", lenses for cameras with APS-C (or Super-35mm) size sensors, only. DT lenses will not fully illuminate the sensor/film area of ...

  5. Photographic lens design - Wikipedia

    en.wikipedia.org/wiki/Photographic_lens_design

    In some zoom lenses it is placed some distance away from the ideal location in order to accommodate the movement of floating lens elements needed to perform the zoom function. Most modern lenses for 35mm format rarely provide a stop smaller than f/22 because of the diffraction effects caused by light passing through a very small aperture.

  6. 1-800 Contacts - Wikipedia

    en.wikipedia.org/wiki/1-800_Contacts

    The brands that 1-800 Contacts use includes Johnson & Johnson Vision Care, Alcon, Bausch & Lomb and CooperVision. The company was founded as the industry's first way to buy contacts online and has since expanded to provide online prescription renewals, glasses, lens replacements, and the in-house AquaSoft Daily contact lenses brand.

  7. Zenni Optical - Wikipedia

    en.wikipedia.org/wiki/Zenni_Optical

    Zenni Optical mail order. Zenni Optical was founded in 2003 by Tibor Laczay and Julia Zhen. [1] [2] Before being renamed to Zenni Optical when it began offering $7 and $8 glasses, the company was named 19dollareyeglasses.com. [3] [4] [5] Around 2014, co-founder Zhen acquired the building occupied by the Marin Independent Journal to house Zenni. [6]

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