Canon 35mm f/1.2 optical formula appears, along with a 12mm f/1.2

The Canon RF 35mm f/1.2L USM has been on our roadmap since the roadmap began many years ago. Might we finally be getting closer to the lens finally appearing?

The patent definitely shows a full-frame optical formula, but the back focus is ridiculously short.

The optical formulas show “f/1.3”, but if these make it to an actual product, they’ll likely be rounded to either f/1.2 or f/1.4, which is a pretty normal thing to do for focal length and aperture.

Canon 35mm f/1.2 Optical Formula

  • Focal length: 33.53mm
  • F-number: 1.30
  • Half angle of view: 32.83°
  • Image Height: 21.64mm
  • Length Overall: 61.97mm
  • Back Focus: 0.29mm

The same patent also shows an fast ultra-wide angle prime lens with a similarly short back focus distance.

Canon 12mm f/1.2 Optical Formula

  • Focal length:12.40
  • F-number: 1.30
  • Half angle of view: 32.82
  • Height: 8.00
  • Length Overall: 21.76
  • Back Focus: 0.44

This patent appears to have been uncovered by asobinet.

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