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Canon Patent For 20mm f/1.4 and 12-24mm f/4.3-5.6 Lenses For EF Mount

Canon Patent For 20mm F/1.4 And 12-24mm F/4.3-5.6 Lenses For EF Mount

Hi Lows Note spotted a Canon patent application (2019-128526, Japan) describing optical formulas for a 20mm f/1.4 and a 12-24mm f/4.3-5.6 lens, both for the Canon EF mount.

20mm f/1.4 lens:

  • Focal length: 20.50 mm
  • FNo.: 1.44
  • ω: 46.54
  • Image height: 21.64 mm
  • Lens length: 134.70 mm
  • Back focus: 36.81 mm

12-24mm f/4.3-5.6 lens:

  • Focal length: 12.40 – 18.00 – 23.64 mm
  • FNo.: 4.35 – 4.96 – 5.60
  • ω: 60.18 – 50.25 – 42.47
  • Image height: 21.64 mm
  • Lens length: 142.18 – 132.82 – 131.14 mm
  • Back focus: 36.14 – 44.23 – 52.29 mm

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

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