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File:Bertele-Zeiss Biogon (1951, f4.5).svg

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Description
English: Lens design patented by Ludwig Bertele, later sold as Zeiss Biogon. Redrawn from geometry listed in figure 2 (f/4.5 version) of US Patent 2,721,499.
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Author Mliu92

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12 July 1951

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24e3481100ae475b4ccdd1e8940e352e6444a9f6

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current20:56, 8 November 2018Thumbnail for version as of 20:56, 8 November 20182,000 × 1,100 (3 KB)Mliu92User created page with UploadWizard

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