New Patent: Sigma 11-22mm F4.5-5.6 Lens

sigma-11-22

Sigma has just filed a new patent for 11-22mm F4.5-5.6 lens. This is an ultra wide zoom lens for Canon, Nikon full-frame DSLRs.

Patent Publication No. 2015-203734

  • Published 2015.11.16
  • Filing date 2014.4.11

Example 1

  • Focal length  f=11.33 15.33 21.30
  • Fno.=4.50 5.00 5.86
  • Total angle of view ω=126.85 108.80 87.93
  • Image height Y= 21.63 21.63 21.63
  • Zoom ratio: 2
  • Total length 163.42 156.24 156.59

Source: EGI

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