Panasonic 12-60mm f/4.5-5.6 and Olympus 150mm f/2.8 lens patent

Panasonic filed a patent (201247813) in Japan for a 12-60mm f/4.5-5.6 Micro Four Thirds lens:

  • Patent release date: March 8th, 2012
  • Patent filed on: August 24th, 2010
  • Focal length: 58.1999-12.3599mm
  • Aperture: 4.63557-5.76853
  • Angle of view: 10.1280-4.3446 deg.
  • Zoom ratio: 4.70875
  • Lens design: 11 elements in 8 groups
  • 1 ED glass element
  • 5 aspherical elements
  • Optical Image Stabilizer
  • Internal focusing/zooming

Patent 201253260 is for a 150mm f/2.8 Macro lens by Olympus. Several different lens designs were described - for Four Thirds and Micro Four Thirds cameras:

  • Patent release date: March 15, 2012
  • Patent filed on: September 31, 2010
  • Focal length: 150.11mm
  • Aperture: 2.83 - 1.85 - 1.30
  • Lens length: 178.64mm
  • Lens design: 15 elements of 12 groups
  • 3 ED glass elements
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  • Alex

    Does this [Aperture: 2.83 - 1.85 - 1.30] mean that the aperture changes when lens is focusing, and focused to infinity it is f1.3, and 2.83 at MDF?

  • Nathan

    f4.5-f5.6 is pathetically terrible. When will Olympus and Panasonic ever learn that micro four thirds benefits from an extra stop or so? f2.8-f4 would be great, f4.5-5.6 makes people go “meh”.

  • Kevin Purcell

    I think the focal lengths are wrong on that “12-60mm” f/4.5-5.6 Micro Four Thirds lens.

    Look at the numbers:

    Focal length: 58.1999-12.3599mm
    Aperture: 4.63557-5.76853
    Angle of view: 10.1280-4.3446 deg.

    58.1999-12.3599mm gives 10 degrees to 5 degrees and a small aperture. Does that seem sensible for a 24 to 120mm eq?

    58.1999-123.599mm (60 to 120m) seems more likely though a little odd (a bit more than x2 zoom?).

  • Garen

    Actually, 12-60mm with Internal focusing/zooming was my long time dream, but unfortunately I am “nikonian”.

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