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Canon Patent Cine Lens CN-E 18-85mm and CN-E 15.5-47mm


New Canon Cine Lens Patents surfaced over the web: CN-E 18-85mm f/2.8, CN-E 15.5-47mm f/2.8. Both the canon lenses features constant F2.8 aperture throughout the zoom range.

Take a look at the patent details below translated by google

Explanation and self-interpretation of the patent literature

  • Patent Publication No. 2015-4917
    • Published 2015.1.8
    • Filing date 2013.6.24
  • Example 1
    • Zoom ratio 2.80
    • Focal length 16.00 29.68 44.80
    • F number 2.80
    • Half angle (in degrees) 43.15 26.81 18.51
    • Image height 15.00
    • Overall length of the lens 263.54
    • BF 39.04
  • Example 2
    • Zoom ratio 4.50
    • Focal length 18.50 45.61 83.25
    • F number 2.80
    • Half angle (in degrees) 39.04 18.20 10.21
    • Image height 15.00
    • Lens length 263.78 263.78 263.78
    • BF 46.93 46.93 46.93
  • Canon patents
    • 5-group zoom of positive and negative negative-positive-positive
    • Inner focus (part of the first group)
    • Inner zoom

See more Canon Patents

1 comment to Canon Patent Cine Lens CN-E 18-85mm and CN-E 15.5-47mm

  • Marcus

    And another cine lens.

    It looks like Canon is more interested in developing and inventing video stuff than in stuff for professional photographers.

    That sucks.

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