Pentax files a patent for a DA 12-35mm f/3.5-4.5 AL WR SDM lens

Pentax filed for a patent in Japan for a DA 12-35mm f/3.5-4.5 AL WR SDM lens:

  • Patent number: 2010-282230
  • Release date: December 16th, 2010
  • Filing date: September 10th, 2010
  • Focal length: 12.30-34.50mm
  • Aperture: 3.6-4.5
  • Angle of view: 101.2-44.0°
  • 3 aspherical elements
  • Suited for APS-C format cameras
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