Tamron 70-200mm f/2.8 lens patent

Tamron filed a patent in Japan for a new 70-200mm f/2.8 lens that will probably be an update of their current version. Tokina recently announced a new AT-X 70-200mm f/4 PRO IF FX lens and this is probably Tamron's response.

The details:

  • Patent applications: 201258619, 201258620
  • Patent release date: March 22, 2012
  • Patent filling date: September 10, 2010
  • Focal length: 71.5336 - 194.0928mm
  • Aperture: 2.9
  • Angle of view: 12.48 - 34.66°
  • Magnification ratio: 2.713
  • Lens design: 18 elements in 13 group
  • 3 aspherical elements
  • 3 ED elements
  • Internal Focus
  • Vibration Compensation
  • Compact, lightweight design
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