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Canon Patent: RF 24-70mm f/2 And RF 24-105mm f/4L IS USM Lenses

Canon Patent: RF 24-70mm F/2 And RF 24-105mm F/4L IS USM Lenses

A Canon patent discussing optical formulas for two lenses for the Canon RF mount (EOS R).

Canon patent application 2020-79965A discusses optical formulas for a RF 24-70mm f/2 lens and a RF 24-105mm f/4L IS USM lens.

RF 24-105mm f/4 L IS USM

  • Zoom ratio: 4.12
  • Focal length: 24.72 50.92 101.84 mm
  • F number: 4.12 4.12 4.12
  • Half angle of view: 41.19 23.02 11.99
  • Image height: 21.64 21.64 21.64 mm
  • Lens length: 125.34 142.50 169.34 mm
  • Back focus: 17.88 19.75 30.96 mm

RF 24-70mm f/2

  • Zoom ratio: 2.75
  • Focal length: 24.70 35.76 67.86 mm
  • F number: 2.06 2.06 2.06
  • Half angle of view: 41.22 31.18 17.68
  • Image height: 21.64 21.64 21.64 mm
  • Lens length: 152.24 158.86 179.82 mm
  • Back focus: 12.93 19.69 30.66 mm

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

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