Canon Patents

Patent: Canon EF 17-35mm f/4-5.6 IS STM

We’ve heard some chatter that Canon would continue to develop it’s non-L zoom lenses for full frame camera lineup and this patent for an EF 17-35mm f/4-5.6 IS would seem to fit into that segment.

Canon News, a new leader in patent tracking found this one.

Canon EF 17-35mm f/4-5.6 IS STM Optical Formula

  • Focal distance: 17.50  25.12  34.09
  • F number: 4.00 4.85   5.88
  • A half field angle (degree): 51.03  40.73  32.40
  • Image height: 21.64  21.64  21.64
  • Whole length of the lens: 130.88 128.52 134.05
  • BF: 37.60  49.75  64.06

Japan patent application 2017-161568

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