New Patent: Canon EF 28-560mm F/2.8-5.6 Lens

Canon patent

Canon has just file a new patent for EF 28-560mm f/2.8-5.6 lens. This is a super zoom lens with quite large in size!

Detail translated by Google:

  • Patent Publication No.  2016-80973
    • Published 2016.5.16
    • Filing date 2014.10.21
  • Example
    • Zoom ratio 18.78
    • Focal length 28.80 139.49 540.91
    • F-number 2.88 4.77 5.88
    • Half angle (in degrees) 36.91 8.82 2.29
    • Image height 21.64
    • Overall length of the lens  298.13 341.13 398.13
    • BF 44.99 76.94 116.58

Source: EGAMI

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