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Canon RF 70-200mm f/4L, RF 28mm f/1.8, RF 50mm f/1.8 Lens Patents

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Here is a Canon patent application for RF 70-200mm f/4L, RF 28mm f/1.8, RF 50mm f/1.8 lenses.

Designed for Canon full frame mirrorless camera system, the two non-L lenses are the affordable candidates for the consumer market. There is also Canon RF 70-200mm f/4L lens.

EOS R is the first camera to feature the RF lens mount with a 12-pin connection, flange back distance of 20mm and a wide 54mm mount diameter enabling even greater flexibility in lens design.

Canon RF 70-200mm f/4L:

  • Focal Length: 72.20mm 130.45mm 194.20mm
  • F-Number: 4.00 3.95 4.00
  • Angle of View: 16.68° 9.42° 6.36°
  • Image Height: 21.64mm 21.64mm 21.64mm
  • Total Lens Length: 215.54mm 215.54mm 215.54mm
  • BF: 25.98mm 25.98mm 25.98mm

Canon RF 28mm f/1.8

  • Focal length: 28.80mm
  • F-number: 1.85
  • Half angle of view: 36.91°
  • Image height: 21.64mm
  • Total lens length: 80.30mm
  • BF: 7.00mm

Canon RF 50mm f/1.8

  • Focal length: 48.50mm
  • F-number: 1.85
  • Half angle of view: 24.04°
  • Image height: 21.64mm
  • Total lens length: 95.00mm
  • BF: 15.80mm

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