Canon Patents

Patent: Lots of fast RF prime lens optical formulas

This site contains affiliate links to products and services. We may receive a commission for purchases made through these links.

Keith over at Northlight Images has uncovered a patent at the USPTO that shows Canon working on a lot of fast RF prime lenses.

The optical formulas in this patent include:

  • Canon RF 50mm f/1.8
  • Canon RF 80mm f/1.4
  • Canon RF 85mm f/1.4
  • Canon RF 85mm f/1.8
  • Canon RF 100mm f/2
  • Canon RF 135mm f/2
  • Canon RF 300mm f/2.8

These obviously won’t all become consumer products, but I think it shows Canon is working on longer fast primes for the RF mount.