Patent: Canon RF APS-C pancake prime lens optical formulas

Craig
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It looks like Canon will be bringing one or more RF-S prime lenses for the Canon EOS R7 and Canon EOS R10. One of the most requested RF-S lenses is unsurprisingly a pancake lens. Keith at Northlight Images uncovered a patent at the USPTO with what looks to be RF-S pancake optical formulas.

None of these

Canon RF-S 14mm f/2.8

  • Focal Length: 14.28mm
  • F-Number: 2.90
  • Half Angle of View: 51.88°
  • Image Height: 18.20mm
  • Total Lens Length: 57.50mm (image sensor to front element)
  • Backfocus: 10.97mm

Canon RF-S 16mm f/2.8

  • Focal Length: 16.48mm
  • F-Number: 2.90
  • Half Angle of View: 47.84°
  • Image Height: 18.20mm
  • Total Lens Length: 63.19mm (image sensor to front element)
  • Backfocus: 12.54mm

Canon RF-S 10mm f/2.8

  • Focal Length: 18.20mm
  • F-Number: 2.90
  • Half Angle of View: 45.00°
  • Image Height: 18.20mm
  • Total Lens Length: 63.45mm (image sensor to front element)
  • Backfocus: 12.94mm

Canon RF-S 20mm f/2.8

  • Focal Length: 20.10mm
  • F-Number: 2.90
  • Half Angle of View: 48.31°
  • Image Height: 18.20mm
  • Total Lens Length: 63.99mm (image sensor to front element)
  • Backfocus: 11.16mm
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Craig is the founder and editorial director for Canon Rumors. He has been writing about all things Canon for more than 17 years. When he's not writing, you can find him shooting professional basketball and travelling the world looking for the next wildlife adventure. The Canon EOS R1 is his camera of choice.
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