New Patent: Sigma 14mm f/3.5 Lens (APS-C Mirrorless)

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The Current Sigma 30mm f/1.4 DC DN Contemporary Lens for Sony E

Sigma has filed a new patent for the 14mm f/3.5 wide angle lens, which will be designed for APS-C mirrorless cameras.

Take a look at the patent details below translated by Google.

Patent Publication No. 2016-139087

  • Published 2016.8.4
  • Filing date 2015.1.29

Example 1

  • INF 200mm
  • Focal length 13.98 13.28
  • F-number 3.53 3.54
  • Full angle of view 2ω 90.74 92.90
  • The image height Y 14.20 14.20
  • Overall length of the lens 89.25 89.25
  • BF 17.5750
  • Lens configuration 8 groups 10 sheets
  • 2 aspherical three sides
  • ED 1 ( sigma in ELD)
  • Fluorite 4 ( sigma in FLD)

Example 2

  • INF 200mm
  • Focal length 13.97 13.28
  • F-number 4.13 4.13
  • Full angle of view 2ω 90.90 92.68
  • The image height Y 14.20 14.20
  • Overall length of the lens 82.60 82.60
  • BF 17.6874
  • Lens configuration 8 groups 10 sheets
  • 2 aspherical three sides
  • ED 1 ( sigma in ELD)
  • Fluorite 4 ( sigma in FLD)

Sigma patents

  • FumakeTadashi
  • Inner focus (the second group)

via: Egami

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