Canon EF 1000MM F/5.6 IS DO patent details

Canon 800mm lens

In a report by CanonRumors, looks like a 1000mm replacement for the EF 800mm f/5.6L IS has just been patented with record showing an optical formula for an EF 1000mm f/5.6 IS DO. In earlier report, the prototype EF 600mm f/4 IS DO BR has already been outed and likely of a new DO lens could be inevitable, making a 1000mm a good replacement candidate. See full details of the patent below.

Patent Publication No. 2016-102852 (Google Translated)

  • Published 2016.6.2
  • Filing date 2014.11.27
  • Zoom ratio 1.00
  • Focal length 950.00
  • F-number 5.80
  • Angle of view 1.30
  • Image height 21.64
  • Overall length of the lens 485.94
  • BF 0.40
  • Canon patent
  • Positive and negative Shibomake
  • Diffractive optical element (first group)
  • Inner focus (the second group)

Via CanonRumors

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