Nikon 100-300mm f/4 full frame lens patent

Nikon filed patent 201293548 in Japan for a Nikon 100-300mm f/4 full frame lens:

  • Patent release date: May 17th, 2012
  • Patent filing date: October 27th, 2010
  • Focal length: 102 – 294mm
  • Aperture: 4.1
  • Angle of view: 8.2 – 24.1 deg
  • Lens length: 282.43mm
  • Image height: 21.6mm
  • Lens design: 22 elements in 16 groups, 4 ED elements

FYI: few months ago Sigma discontinued their 100-300mm f/4 EX DG APO HSM lens.

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