Canon Patents

Patent: Canon EF 600mm f/4 DO IS

A patent for the Canon EF 600mm f/4 DO IS has finally appeared. A prototype of this lens was shown in September of 2015 at the Canon EXPO. We were also told a few months ago that the retail version of this lens could be coming near the end of 2017, though we haven’t received confirmation.

Patent publication number 2016-200685 (Google Translated)

  • Release date 2016.12.1
  • Application date 2015.4.9
  • Focal length 585.00
  • F number 4.12
  • Half angle of view (degree) 2.12
  • Image height 21.64
  • Lens total length 335.32
  • BF 66.92

We hope to hear confirmation of a release date in the coming months. We’d also like to see a price tag, but that’s far less likely this far out from an announcement.

image credit // popphoto

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