New Patent: Sigma 20mm F1.8 DG HSM Lens

Sigma 20mm f1.8 DG HSM lens

Sigma has just filed a new patent: Sigma 20mm F1.8 DG HSM lens. This is a new ultra-wide prime contemporary lens for Full-frame sensor.

  • Patent Publication No. 2016-12034 (Google Translated)
    • Published 2016.1 .21
    • Filing date 2014.6.30
  • Example
    • Focal length 20.70 21.01
    • F number 1.84 1.95
    • Total angle of view 2ω 93.42 90.34
    • The image height Y 21.63 21.63
    • Overall length of the lens  139.73 139.73

Source: EGI

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