Patent: Optical formulas for Canon RF macro lenses

Canon Rumors
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We’re obviously going to get an RF L macro lens sooner than later, and Canon News has uncovered another patent showing various optical formulas for such a lens.

Canon RF 65mm f/2.8

  • Focal length: 65.13mm
  • F number : 2.92
  • Angle of view: 18.38°
  • Image height: 21.64mm
  • Lens length: 135.78mm
  • Backfocus: 21.40mm

Canon RF 90mm f/2.8 Macro

  • Focal length: 87.04mm
  • F number: 2.92
  • Angle of view: 13.96°
  • Image height: 21.64mm
  • Lens length: 135.86mm
  • Backfocus: 19.58mm

Canon RF 100mm f/2.8 Macro

  • Focal length: 97.62mm
  • F number: 2.92
  • Angle of view: 12.50°
  • Image height: 21.64mm
  • lens length: 123.21mm
  • Backfocus: 18.86mm

Canon RF 180mm f/2.8 Macro

  • Focal length: 189.96mm
  • F number: 2.92
  • Angle of view: 6.50°
  • Image height: 21.64mm
  • Lens length: 185.34mm
  • Backfocus: 23.95mm

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