New Patent: Sigma 70-300mm f/4-5.6 DG OS HSM Lens

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Current Sigma 70-300mm f/4-5.6 DG Autofocus Lens

Sigma has filed a new patent for 70-300mm f/4-5.6 DG OS HSM lens. Take a look at the patent details below translated by Google.

Patent Publication No. 2016-45435

  • Published 2016.4.4
  • Filing date 2014.8.26

Example 1

  • Zoom ratio 4.02
  • Wide-angle intermediate telephoto
  • Focal length 72.04 144.12 289.92
  • F-number 4.09 4.93 5.86
  • Full angle of view 2ω 33.41 17.07 8.53
  • The image height Y 21.63 21.63 21.63
  • The total lens length 197.80 223.03 245.17
  • Lens configuration 15 group 21 sheets

Recently Sigma also filed a patent for 24-70mm f/2.8 DG OS HSM Art lens which will be a nice addition to the current Sigma Art product line. And it will be a completely new optical formula lens full frame DSLRs.

And Sigma is actively working on about 12 lenses and at least three new Sigma lenses will be announced in 2016: Sigma 85mm f/1.4 Art Lens, Sigma 24-70mm f/2.8 Art OS Lens and Sigma 70-200mm f/2.8 OS Sport Lens.

via: Egami

Read more: Sigma Rumors

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