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Canon Patent: 83mm f/1.4 For The Canon RF Mount

Canon Patent
Drawing from the patent literature

And here is another Canon patent for an RF mount lens.

Spotted by Hi Lows Note, Canon patent application 2021-81531A (Japan) discusses optical formulas for a 83mm f/1.4 lens for full frame mirrorless cameras, i.e. for the EOS R camera system.

Embodiment 1

  • Focal length (mm): 82.87
  • F number: 1.45
  • Half angle of view (degree): 14.63
  • Image height (mm): 21.64
  • Lens length (mm): 126.50
  • Back focus (mm): 13.00

Embodiment 2

  • Focal length (mm): 82.86
  • F number: 1.45
  • Half angle of view (degree): 14.63
  • Image height (mm): 21.64
  • Lens length (mm): 128.50
  • Back focus (mm): 17.13

Embodiment 3

  • Focal length (mm): 82.64
  • F number: 1.45
  • Half angle of view (degree): 14.67
  • Image height (mm): 21.64
  • Lens length (mm): 113.70
  • Back focus (mm): 18.16

More Canon patents are listed here. Some particularly interesting patent applications we think might get into production are these:

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