Canon Patents

Patent: Canon 70-200mm f/2.8 DO

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A patent showing another optical formula for a diffractive optics lens has appeared, this time in the form of a 70-200mm f/2.8 DO. Most of the patent seems to talk about this lens for video applications.

Patent Publication No. 2016-80877

  • Published 2016.5.16
  • Filing date 2014.10.17
  • Zoom ratio 2.69
  • Focal length 72.15 134.00 193.98
  • F-number 2.91 2.91 2.91
  • Angle of view 16.69 9.17 6.36
  • Image height 21.64
  • The total lens length 223.50 223.50 223.50
  • BF 45.35 45.35 45.35

We expect to see new Cinema EOS announcements for IBC in September, including the Cinema EOS C700.

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