Canon Patents

Patent: Lower cost RF mount prime and zoom lenses, including an RF 16-35mm f/4

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Canon obviously needs some “affordable” prime and zoom lenses for the RF mount, and a few JPO patent applications seem to suggest we’re getting closer to that being a reality.

Canon RF 20mm f/2

  • Focal length: 20.50
  • F number: 2.06
  • Half angle of view: 46.54
  • Image height: 21.64
  • Lens length: 90.13
  • Back focus: 13.50

Canon RF 35mm f/1.8

  • Focal length: 35.60
  • F number: 1.85
  • Half angle of view: 31.22
  • Image height: 21.64
  • Lens length: 81.87
  • Back focus: 13.49

Canon RF 35mm f/2

  • Focal length: 35.91
  • F number: 2.06
  • Half angle of view: 31.07
  • Image height: 21.64
  • Lens length: 50.50
  • Back focus: 15.05

Canon RF 35mm f/2.8

  • Focal length: 35.70
  • F number: 2.88
  • Half angle of view: 31.22
  • Image height: 21.64
  • Lens length: 60.00
  • Back focus: 13.15

Canon RF 45mm f/2.8

  • Focal length: 44.70
  • F number: 2.85
  • Half angle of view: 25.83
  • Image height: 21.64
  • Lens length: 62.63
  • Back focus: 13.13

Canon RF 16-35mm f/4

  • Focal length: 16.48 24.02 33.75
  • F number: 4.12
  • Half angle of view: 52.70 42.01 32.66
  • Image height: 21.64
  • Lens length: 117.64 109.16 110.13
  • Back focus: 11.50 19.17 29.63