EF 24-105 f/3.5-5.6 IS Patent

  • Patent Publication No. 2010-237455
  • Release date 2010/10/21
  • Filing date 2009/03/31
  • Example 6
  • Focal length f = 24.90 – 102.02mm
  • Fno = 3.62 – 5.82
  • Angle of 81.96 – 23.94 °
  • Image Circle 43.28mm
  • Total lens length 119.84 – 151.84mm
  • BackFocus 38.50 – 51.35mm
  • An aspheric surface
  • Patent Technology
  • Pojitiburidotaipu zoom
  • Zoom a positive polarity
  • Chromatic aberration, spherical aberration, coma aberration correction
  • Refractive index and placement optimization
  • Moving the second lensInnerfocusing equation
  • Zooming
  • All the lens moves
  • Miniaturization

It looks like a cheap zoom for full frame. 5D3 low end kit lens?

[source]

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