Sigma has filed a new patent for 70-300mm f/4-5.6 DG OS HSM lens. Take a look at the patent details below translated by Google.
Patent Publication No. 2016-45435
- Published 2016.4.4
- Filing date 2014.8.26
- Zoom ratio 4.02
- Wide-angle intermediate telephoto
- Focal length 72.04 144.12 289.92
- F-number 4.09 4.93 5.86
- Full angle of view 2ω 33.41 17.07 8.53
- The image height Y 21.63 21.63 21.63
- The total lens length 197.80 223.03 245.17
- Lens configuration 15 group 21 sheets
Recently Sigma also filed a patent for 24-70mm f/2.8 DG OS HSM Art lens which will be a nice addition to the current Sigma Art product line. And it will be a completely new optical formula lens full frame DSLRs.
And Sigma is actively working on about 12 lenses and at least three new Sigma lenses will be announced in 2016: Sigma 85mm f/1.4 Art Lens, Sigma 24-70mm f/2.8 Art OS Lens and Sigma 70-200mm f/2.8 OS Sport Lens.
Read more: Sigma Rumors
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