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Canon EF-M 9-17mm f/3.5-5 lens patent shows up online

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Canon has patented a new EF-M 9-17mm f/3.5-5 lens designed for company’s mirrorless interchangeable lens system.

It seems that Canon is working on a new super wide-angle zoom lens with a maximum aperture range between f/3.5-5. The optic has been patented in Japan and, if it becomes available, it will be aimed at Canon mirrorless cameras.

Canon EF-M 9-17mm f/3.5-5 patent describes a lens with a 35mm equivalent of 14.5-27mm and a maximum aperture of f/3.5-5. The lens is aimed at EOS M mirrorless cameras.

Canon has patented EF-M 9-17mm f/3.5-5 lens

Canon EF-M 9-17mm f/3.5-5 lens patent shows up online

A newly-discovered patent is describing a lens for an EF-M mirrorless cameras which features a focal length range from 9mm to 17mm. The lens offers a 1.79x optical zoom and an image height of about 11.79mm.  From the patent application we can say the length of the optic ranges from 85mm to 80mm to 82mm.

Patent Publication No. 2016-85259

  • Published 2016.5.19
  • Filing date 2014.10.23
  • Example
  • Zoom ratio 1.79
  • Focal length 9.27 13.32 16.58
  • F-number 3.60 4.38 5.11
  • Angle of view 51.83 45.17 38.94
  • Image height 11.79 13.40 13.40
  • Overall length of the lens 85.22 79.65 81.94
  • BF 14.99 16.82 15.41

As you might guess the EF-M 9-17mm f/3.5-5 wide-angle zoom lens is designed for EOS M mirrorless cameras with APS-C-sized image sensors.