Third Party Lenses

Patent: Sigma 70-200mm f/2.8 DG OS HSM Sport

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A patent showing the optical formula for a Sigma 70-200mm f/2.8 OS Sport lens has appeared.

Patent Publication No. 2016-75828

  • Published 2016.5.12
  • Filing date 2014.10.8
  • Zoom ratio 2.67
  • Focal length 72.41 118.50 193.38
  • F-number 2.92 2.92 2.92
  • Full angle of view 2ω 33.58 20.51 12.56
  • The image height Y 21.63 21.63 21.63
  • The total lens length 250.00 250.00 250.00

This lens along with a new 24-70mm f/2.8 OS Art have been long expected from Sigma.

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