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Canon Patent for RF 17-34mm f/4-5.6 Lens for EOS R Systems

Canon Patent

Hi Lows Note spotted a Canon patent application (Japan, 2019-074633) describing the optical formula for a 17-34mm f/4-5.6 lens for the Canon EOS R mirrorless system.

  • Zoom ratio: 1.94
  • Focal length: 17.50 – 27.00 – 33.95 mm
  • F number: 3.94 – 3.92 – 5.69
  • Angle of view: 51.03 – 38.71 – 32.51
  • Image height: 21.64 mm
  • Lens length: 122.00 – 119.11 – 121.87 mm
  • Back focus: 20.00 – 31.62 – 40.07 mm

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

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