Has Sigma Just Drawn the Blueprint for the Most Exciting Lenses Ever Made?

Sigma has already introduced some great lenses in the past. With their latest global series lineup, Sigma has been trying to offer new lenses for the mirror less range. In addition, it is also one of the brands that is working closely with Canon to deliver newer lenses. It now appears the list is growing, with a patent showcasing newer telephotos. Have a look.