Patent: Sigma 200mm F/2 DG OS HSM Sports

Patent: Sigma 200mm F/2 DG OS HSM Sports

Sigma has patented a new 200mm lens, the Sigma 200mm f/2 DG OS HSM Sports. The name suggests that Sigma is targeting sports shooters, however a fixed 200mm f/2 may well find its way into the kit of wildlife shooters too. Check out the patent info below, as translated by Google:

  • Patent Publication No. 2016-45314
    • Published 2016.4.4
    • Filing date 2014.8.21
  • The master lens
    • Focal length 194.93
    • F-number 2.05
    • Full angle of view 2ω 12.70
    • The image height Y 21.63
    • Overall length of the lens 231.33
    • BF 60.2233
  • Complex lens
    • Focal length 274.52
    • F-number 2.89
    • Full angle of view 2ω 9.06
    • The image height Y 21.63
    • Overall length of the lens 252.18
    • BF 39.5088
  • [0058] Incidentally, the main lens used in the embodiments of the present invention is directed to an imaging optical system disclosed in Example 1 of JP 2008-145584. However, the main lens is not limited to this.
  • [0059] In order to properly carry out the evaluation of the chromatic aberration in the examples were fitted a known glass types in Example 1 of Japanese Unexamined Patent Publication No. 2008-145584.


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