Sigma Patents 70-200mm f/2.8 DG OS HSM | Sports Lens Optical Design

According to the Egami Blog, Sigma has patented an optical formula for the 70-200mm f/2.8 DG OS HSM | Sports lens.

Patent Description

  • Patent Publication No. 2016-75828
  • Published 2016.5.12
  • Submitted 2014.10.8
  • Zoom ratio 2.67
  • Focus distance 72.41 118.50 193.38
  • F-number 2.92 2.92 2.92
  • Field of view 2h 33.58 20.51 12.56
  • Image height Y 21.63 21.63 21.63
  • The total lens length 250.00 250.00 250.00

Posted: 5/13/2016 5:31:38 AM ET   Posted By: Sean
Posted to: Canon News, Sony News    Category: Camera and Lens Patents
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