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  2. Category:Lens manufacturers - Wikipedia

    en.wikipedia.org/wiki/Category:Lens_manufacturers

    This is for companies who exclusively or predominantly create optical lenses for still and film photography. Subcategories This category has the following 10 subcategories, out of 10 total.

  3. Luxottica - Wikipedia

    en.wikipedia.org/wiki/Luxottica

    The new entity will be worth around $50bn (£37bn), sell close to a billion pairs of lenses and frames every year, and have a workforce of more than 140,000 people." [ 34 ] On 1 October 2018 the new holding company EssilorLuxottica was founded, resulting in combined market capitalization of approximately €46.3 billion as of the date of the ...

  4. EssilorLuxottica - Wikipedia

    en.wikipedia.org/wiki/EssilorLuxottica

    It designs, produces and markets ophthalmic lenses, equipment and instruments, prescription glasses and sunglasses. It was founded on 1 October 2018 and its name is an amalgamation of the two major corporations which merged to create it; the French Essilor and the Italian Luxottica .

  5. List of photographic equipment makers - Wikipedia

    en.wikipedia.org/wiki/List_of_photographic...

    Some camera makers design lenses but outsource manufacture. Some lens makers have cameras made to sell under their own brand name. A few companies are only in the lens business. Some camera companies make no lenses, but usually at least sell a lens from some lens maker with their cameras as part of a package.

  6. 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]

  7. Spiratone - Wikipedia

    en.wikipedia.org/wiki/Spiratone

    Spiratone was a company specializing in low-cost lenses and filters for cameras, lighting, and darkroom equipment. The company was started by Fred Spira in 1941 in the bathroom of his parents' apartment where he developed film. In 1946, it relocated to a large loft on West 27th Street in Manhattan and then grew to a successful multimillion ...

  8. Template:Pentax K-mount lens compatibility chart - Wikipedia

    en.wikipedia.org/wiki/Template:Pentax_K-mount...

    lens function compatibility Bayonet > K, M A F, FA, D-FA FA Powerzoom FA-J DA, DA-L DA-SDM, DA-DCM (KAF3) DA, D-FA (KAF4) Main changes: Camera First K-mount version A-position, electrical contacts Screw drive, with contacts for serial communication Two contacts for Powerzoom Aperture ring abandoned Small image circle In lens autofocus motor

  9. Thoriated glass - Wikipedia

    en.wikipedia.org/wiki/Thoriated_glass

    Thoriated glass is a glass material used in the manufacture of optical systems, specifically photographic lenses. It is useful to this process due to its high refractive index . Thoriated glass is radioactive due to the inclusion of thorium dioxide , oxide of radioactive element thorium .