Canon filed a patent for a EF 1000mm f/5.6 DO lens

Canon EF 1000mm f:5.6 DO lens patent
Canon filed a new patent application in Japan for a EF 1000mm f/5.6 DO lens. Here are the details:

  • Patent publication: 2016-102852
  • Published on: 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
  • Diffractive optical element (first group)
  • Inner focus

Via Egami

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