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Canon patent for EF-M 9-17mm f/3.5-5 lens (EOS M system)

canon patent

Yet another Canon patent for an EF-M lens (EOS M system). This time we have an optical formula for an EF-M 9-17mm f/3.5-5 lens. According to the patent literature, f/5 at the wide end was achieved by using high quality glass. The first “L”-grade lens for the EOS M?

It definitely looks like Canon is investing pretty much in the EOS M system, at least if you count all the filed patents. We expect at least one new EOS M model this year, maybe two with one being a full-frame mirrorless camera.

  • 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
[via Egami]
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