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Canon Patent for RF 24-70mm f/2.8L USM Lens

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Canon has filed a new patent in Japan. The application is for RF 24-70mm f/2.8L lens designed for Canon full frame mirrorless camera system.  This lens is very similar to the RF 28-70mm f/2L USM and will probably 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 24-70mm f/2.8L. Check it out!

Canon RF 24-70mm f/2.8L Lens Patent

Canon Patent for RF 24-70mm f/2.8L USM Lens

Canon RF 24-70mm f/2.8L Lens Patent Specifications:

  • Focal Length: 24.69mm 37.63mm 67.88mm
  • F-Number: 2.91 2.91 2.91
  • Half angle of view (degrees): 41.23 29.90 17.68
  • Total length of zoom lens (mm):  139.21mm 150.29mm 171.74mm
  • Backfocus: 13.49mm 22.31mm 35.10mm

The RF 24-70mm f/2.8L USM is expected to be announced sometime in 2019, maybe even as soon as CP+ in February.

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via: USPTO