Home » Canon » Canon Patent for RF 28-280mm f/2.8, RF 28-135mm f/4, RF 24-170mm f/4 Lenses

Canon Patent for RF 28-280mm f/2.8, RF 28-135mm f/4, RF 24-170mm f/4 Lenses

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New patents are filed by Canon. The applications are for RF mount superzoom lenses and they are RF 28-280mm f/2.8, RF 28-135mm f/4, RF 24-170mm f/4.

The first one in the patent application describes a long-zoom RF 28-280mm f/2.8 lens which will be good companion for the RF 28-70mm f/2L USM lens. This will probably be a very large and heavy lens if it is real.

The other ones are the RF 28-135mm f/4 lens or RF 28-170mm f/4 lens. Check out the details below.

Canon RF 28-280mm f/2.8:

  • Focal length: 27.81mm 146.83mm 269.60mm
  • F-number: 2.88 2.88 2.88
  • Half angle of view: 34.09° 8.38° 4.59°
  • Image height: 18.82mm 21.64mm 21.64mm
  • Total lens length: 340.47mm 340.47mm 340.47mm
  • BF: 32.97mm 32.97mm 32.97mm

Canon RF 28-135mm f/4:

  • Focal length: 28.84mm 80.09mm 135.75mm
  • F-number: 4.12 4.12 4.12
  • Half angle of view: 33.13° 15.12° 9.06°
  • Image height: 18.82mm 21.64mm 21.64mm
  • Total lens length: 167.97mm 167.97mm 167.97mm
  • BF: 27.78mm 27.78mm 27.78mm

Canon RF 24-170mm f/4:

  • Focal length: 24.72mm 99.78mm 166.47mm
  • F-number: 4.12 4.12 4.12
  • Half angle of view: 37.29° 12.23° 7.40°
  • Image height: 18.82mm 21.64mm 21.64mm
  • Total lens length: 236.70mm 236.70mm 236.70mm
  • BF: 23.98mm 23.98mm 23.98mm

Canon Camera Deals:

$500 off on Canon EOS R body: $1,799 at Amazon

$700 off on Canon EOS R with 24-105mm Lens: $2,699 at Amazon

$500 off on Canon EOS RP with 24-105mm Lens: $1,899 at Amazon

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Source: USPTO

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