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Canon RF 90mm f/2.8L IS Macro Lens Patent

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Canon has filed a new patent in Japan. The application is for RF 90mm f/2.8L IS Macro lens designed for Canon full frame mirrorless camera system. This lens will likely be a new kit alternative for the next EOS R full frame mirrorless cameras.

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.  The first four Canon RF lenses are the , , , . All four lenses have customizable control rings.

In this patent, Canon shows an optical formula for a RF 90mm f/2.8L IS Macro lens. Check it out!

Canon Patent for RF 90mm f/2.8L IS Macro Lens

Canon RF 90mm f/2.8L IS Macro Lens Patent

Specification and lens arrangement of embodiment 3

  • Focal length: 86.00mm
  • F number: 2.87
  • Half angle of view: 14.12
  • Image height: 21.64mm
  • Lens length: 115.07mm
  • Back focus: 15.93mm

Specification and lens arrangement of embodiment 1

  • Focal length: 97.00mm
  • F number: 2.92
  • Half angle of view: 12.57
  • Image height: 21.64mm
  • Lens length: 115.12mm
  • Back focus: 20.01mm

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