Canon EF 40-800mm f/4.5-5.6 Lens Patent

Canon has filed a patent for a new zoom lens in Japan. The new optic describes the EF 40-800mm f/4.5-5.6 telephoto zoom model.

Looks like an all-in-one lens, it is designed for Canon digital SLR cameras with full-frame image sensors. On the other hand the patent application refers to 2 optical formulas.

One for the full-frame lens and 2 for the Powershot type of cameras. So it might refer to a zoom lens for such a PowerShot compact. From the EF designation we believe it would be a full-frame lens. If so the new EF 40-800mm F4.5-5.6 lens to be announced before the Olympic Games in Tokyo 2020.

Canon Patent for EF 40-800mm f/4.5-5.6 Lens


  • Patent Publication No. 2016-128846
    • Published 2016.7.14
    • Filing date 2015.1.9
  • Example 1
    • Zoom ratio 19.42
    • Focal length 41.09 92.80 152.20 225.00 797.99
    • F-number 4.67 4.66 4.65 4.67 5.71
    • Angle of view 27.79 13.13 8.10 5.50 1.55
    • Image height 21.65
    • Overall length of the lens 489.32
    • BF 39.28
  • Canon patent
    • Inner zoom


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