Sigma Patents: 50-140mm f/2.8 DC DN & 70-200mm f/2.8 DG DN Lenses

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Sigma has filed two new patents for 50-140mm f/2.8 DC DN for Sony APS-C mirrorless camera & 70-200mm f/2.8 DG DN for Sony E-mount full frame mirrorless cameras.

[Publication number] P2023090116
[Publication date] 2023-06-29
[Patent application title] Imaging Optical System

50-140mm f/2.8 DC DN

Example 1

  • Focal length: 50.50-136.50
  • F-value: 2.92
  • Half angle of view: 30.62-11.40
  • Image height: 14.20
  • Total length: 125.00-145.00

70-200mm f/2.8 DG DN

Example 2

  • Focal length: 72.00-194.10
  • F-value: 2.92
  • Half angle of view: 32.92-12.12
  • Image height: 21.63
  • Total length: 168.00-203.60

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