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Canon Cinema Lens Patent - 70-200mm F2.8 (Super35mm)

Canon CN-E 70-200mm lens patentLatest patent surfaced over the web that shows Canon Cinema Lens – 70-200mm F2.8, In genral a lens patent takes at-least 2 to 3 years of time to come into existence as a real product.

Take a look at the lens patent details translated by google

  • Patent Publication No. 2015-230449
    • Published 2015.12.21
    • Filing date 2014.6.6
  • Example 1
    • Zoom ratio 2.86
    • Focal length 70.00 118.30 200.00
    • F-number 2.80 2.80 2.80
    • Half angle (in degrees) 12.52 7.49 4.45
    • Image height 15.55 15.55 15.55
    • Overall length of the lens 277.01 277.01 277.01
    • BF 44.72 44.72 44.72

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