Sigma announces two 150-600mm F/5-6.3 DG OS HSM zooms

Sigma has announced a pair of new telezoom lenses. Both described as the '150-600mm F/5-6.3 DG OS HSM' one carries Sigma's 'Contemporary' branding and one is positioned in its 'Sport' lineup. The sports version is dust and splash-proof, while both lenses boast new versions of Sigma's optical image stabilization system. Under the hood though, their construction is significantly different. Read more