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Patent: More Supertelephoto Optical Formulas

By Canon Rumors | February 5, 2018

Patent: More Supertelephoto Optical Formulas

Another set of Supertelephotos has appeared in a Japanese patent application.

Japan Patent ApplicationĀ 2018-018101

  • EF 300mm f/2.8L
  • EF 400mm f/2.8L
  • EF 500mm f/4.0L
  • EF 600mm f/4.0L
  • EF 800mm f/5.6L

We’re expecting new supertelephoto lenses some time in the next 12-18 months.

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