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Sigma 70-300mm f/4-5.6 DG OS HSM lens patented in Japan

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Sigma has patented a 70-300mm f/4-5.6 DG OS HSM telephoto zoom lens in Japan designed for full-frame digital SLR cameras.

The lens in the patent application has a focal range between 70 and 300mm which is ideal for action and sports photography.

This means the Sigma 70-300mm f/4-5.6 DG OS HSM lens is in development and will be added to the company’s Sports or Contemporary lineup. The telephoto zoom lens will probably replace the existing 70-300mm f/4-5.6 DG APO Macro model.

Sigma 70-300mm f/4-5.6 DG OS HSM lens is in the works

Currently there is no additional specs for the Sigma’s telephoto zoom lens except the patent details. We can say it will be designed for full-frame DSLRs as for the DG designation and the HSM refers to the the Hyper Sonic Motor equivalent to Canon USM and Nikon SWM technology. The Hyper Sonic Motor tech on Sigma lenses deliver quick, smooth, and silent autofocusing.


The maximum aperture of the lens stands at f/4-5.6. Sure the lens will benefit from the image stabilization technology which reduces camera shakes in order to prevent photos from turning out blurry. The Sigma 70-300mm f/4-5.6 DG OS HSM lens construction includes 21 elements in 15 groups.

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

Example 1

  • 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

Sigma is actively working on several new lenses and at least three of them will be announced in 2016. These lenses are the  Sigma 85mm f/1.4 Art Lens, 24-70mm f/2.8 Art OS Lens and 70-200mm f/2.8 OS Sport Lens models.