New Patent: Canon EF 40-800mm f/4.5-5.6 Lens

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The Current Canon EF 100-400mm f/4.5-5.6L IS II USM Lens

Canon has filed a new patent for EF 40-800mm f/4.5-5.6 super telephoto zoom lens, which is expected to be announced before 2020 Olympics games, just like EF 70-200mm f/2.8 DO (Diffractive Optics) lens. It seems that Canon will announce several new amazing lenses for the 2020 Olympics games.

Take a look at the patent details below translated by Google.

Patent Publication No. 2016-128846

  • Published 2016.7.14
  • Filing date 2015.1.9

Example 1

  • Zoom ratio 19.42
  • Focal length 41.09 92.80 152.20 225.00 797.99
  • F-number 4.67 4.66 4.65 4.67 5.71
  • Angle of view 27.79 13.13 8.10 5.50 1.55
  • Image height 21.65
  • Overall length of the lens 489.32
  • BF 39.28

Canon patent

  • Inner zoom

via: Egami

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