Canon files a patent for a new 24-70mm F2.8L II USM lens

Canon applied for a patent in Japan for a new 24-70mm F2.8L II USM lens:

For comparison, here is the diagram of the current Canon EF 24-70mm f/2.8L USM lens:

Patent details:

  • Patent publication: 2010-243636
  • Patent published 10/18/2010
  • Patent filled: 04/02/2009
  • Focal distance: 24.54-66.07mm
  • Fno (aperture): 2.91-2.92
  • Angle of view: 82.8-36.26°
  • Image circle: 43.28mm
  • Length: 204.97-170.32mm
  • Back focus: 37.06mm
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