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

…
Read full post here:
http://www.dailycameranews.com/2016/04/sigma-70-300mm-f4-5-6-dg-os-hsm-lens-patent/