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Patent: Canon EF 28-560mm f/2.8-5.6L USM

By Canon Rumors | August 15, 2016

Patent: Canon EF 28-560mm f/2.8-5.6L USM

A patent showing another crazy superzoom has appeared, this time the optical  formula is for an EF  28-560mm f/2.8-5.6L USM. We’d  assume such a lens would also have IS if it ever came to market. We expected to see a non-L superzoom sometime in 2016, but that has apparently been put off until late 2017 at the earliest.

Patent Publication No. 2016-142795

  • Published 2016.8.8
  • Filing date 2015.1.30
  • Zoom ratio 18.86
  • Focal length 28.80 119.57 543.20
  • F-number 2.88 4.56 5.88
  • Half angle of view (degrees) 36.91 10.26 2.28
  • Image height 21.64 21.64 21.64
  • The total lens length 281.07 331.07 385.01
  • BF 53.05 61.31 40.00
  • The effective diameter of the front lens 120.00

I’m not sure this is a superzoom we’re likely to see, but all indications point to Canon definitely developing a replacement for the EF 28-300mm f/3.5-5.6L IS.

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