Canon Patents

Patent: Canon EF-M 9-18mm f/4-5.6

A new ultrawide zoom lens for APS-C EOS M cameras has appeared. This may be a replacement for the excellent EF-M 11-22mm f/4-5.6 IS STM. The only knock against that lens is that it’s not wide enough. Image Stabilization is not part of the patent, which is a notable omission.

Japan Patent Application 2017-219644

  • Focal distance: 9.27  13.35  17.70
  • F number: 4.12  4.84  5.57
  • Field angle: 55.84  45.67 37.66
  • Image height: 13.66 13.66 13.66
  • Whole length of the lens: 61.48 56.10 54.43
  • BF: 10.29 13.62 16.52

Canon News thinks that the primary goal of the design is to keep the focus group as small as possible to speed up AF on mirrorless cameras and for video.

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