Patent: Canon patents RF 200mm f/2L IS, RF 300mm f/2.8L IS and RF 500mm f/4L IS optical formulas

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Canon is obviously working on RF mount versions of the legendary EF 200mm f/2L IS, EF 300mm f/2.8L IS and EF 500mm f/4L IS lenses. I expect the 300mm and 500mm lenses to be announced in late 2022 or in 2023. As for an RF 200mm f/2L IS, maybe further down the road as it’s a pretty niche lens.

Canon RF 200mm f/2L IS USM

  • Focal length 200.00mm
  • F-number 2.06
  • Half angle of view 6.17°
  • Image height 21.64mm
  • Lens overall length 196.01mm
  • Back focus 38.50mm

Canon RF 300mm f/2.8L IS USM

  • Focal length 292.53mm
  • F-number 2.90
  • Half angle of view 4.23°
  • Image height 21.64mm
  • Lens overall length 273.92mm
  • Back focus 76.35mm

Canon RF 500mm f/4L IS USM

  • Focal length 292.53mm
  • F-number 4.12
  • Half angle of view 2.53°
  • Image height 21.64mm
  • Lens overall length 411.08mm
  • Back focus 100.00mm

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