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Canon Working on RF 25-300mm F/3.5-5.6 For Canon EOS R, Patent Suggests

Canon Working On RF 25-300mm F/3.5-5.6 For Canon EOS R, Patent Suggests

Hi Lows Note spotted a Canon patent application (2018-180203) for a RF 25-300mm F/3.5-5.6 lens for the Canon EOS R system. The patent literature describes a compact lens. Doesn’t look like a L-grade lens.

  • Zoom ratio: 11.68
  • Focal length: 25.20 – 294.41 mm
  • F number: 3.50 – 5.60
  • Angle of view: 36.72 – 4.20
  • Image height: 18.80 – 21.61 mm
  • Lens length: 374.08 mm
  • Back focus: 21.75 mm

canon

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