New Patent: Canon RF 13-21mm F2.8L

Canon has just filed a new patent for Canon RF 13-21mm f/2.8 lens in Japan.

Canon RF 13-21mm f/2.8 embodiment:

  • Zoom ratio: 1.58
  • Focal length: 13.40mm  17.30mm  21.20mm
  • F number:         2.88        2.88         2.88
  • Half angle of view: 58.23 51.35 45.58
  • Image height: 21.64mm  21.64mm  21.64mm
  • Lens length: 150.15mm  136.89mm  130.04mm
  • Back focus:  20.96mm  25.13mm  29.31mm

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