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Canon Patent Application For RF 17-72mm f/3.5-5.8 Lens For EOS R

Canon Patent Application

Here is a Canon patent application for a zoom lens for the Canon EOS R full frame mirrorless system.

This Canon patent application (2019-211513) discusses the optical formula for an RF 17-72mm f/3.5-5.8 lens.

  • Zoom ratio: 4.25
  • Focal length: 17.10 34.82 72.70 mm
  • F number: 3.57 4.18 5.85
  • Half angle of view: 51.68 31.85 16.57
  • Image height: 21.64 21.64 21.64 mm
  • Lens length: 151.00 135.57 157.71 mm
  • Back focus: 13.13 27.81 63.49 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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