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Sigma Patent for 8mm f/1.8 Fisheye MFT Lens

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Sigma has filed a new patent in Japan. The new patent refers to a bright 8mm f/1.8 Fisheye designed for Micro Four Thirds cameras.

A bright ultra wide-angle prime such as Sigma 8mm f/1.8 will be great for users of Micro Four Thirds system. However we have to underline that this is only the patent application. So don’t expect the product become available on the market in the near future.

Sigma currently has four DN-series lenses for mirrorless cameras. They are Sigma 19mm f/2.8, 30mm f/1.430mm f/2.8, and 60mm f/2.8 lenses.

Sigma 8mm f/1.8 Fisheye Lens Patent for Micro Four Thirds cameras


If becomes available in the market the optic will provide 16mm focal length in terms of 35mm format. See below for more details.

Patent Publication No. 2016-184136

  • Published 2016.10.20
  • Filing date 2015.3.27

Example 7

  • INF 120mm
  • Focal length 7.90 7.60
  • F-number 1.82 1.83
  • Full angle of view 2ω 197.08 197.08
  • The image height Y 11.60 11.71

via: Egami