Patent: Multiple small RF prime lens optical formulas

Canon Rumors
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Canon News has uncovered a patent that shows Canon is working on small RF prime lenses, like non-L.

Japan patent 2019-152683 does include the RF 35mm f/1.8 IS STM Macro in one of the embodiments, but keep in mind that lens design can sometimes build off of existing lenses.

RF prime lens optical formulas in this patent:

  • Canon RF 20mm f/2 (Lens length of 70mm)
  • Canon RF 35mm f/2.8 (Lens length of 40mm)
  • Canon RF 45mm f/2.8 (Lens length of 43mm)
  • Canon RF 35mm f/2 (Lens length of 30mm)

Beyond the prime lenses, there is also a wide-angle f/4 zoom included.

  • Canon RF 16-35mm f/4 (Lens length 90mm – 97mm)

Looking at all the embodiments, I think only the RF 16-35mm f/4 could realistically be coming.

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