Additional information on the upcoming Sigma 70-200mm f/2.8 DG DN OS Sports lens (see development announcement): 70-200mm full-frame lens (105-300mm in APS-C) Angle of view : 34° -12° 30′ 20 elements in 15 groups (including 3 aspherical, 6 FLD, and 2 SLD elements) Image stabilization: OS2 HLA autofocus Filter size: 77 mm Dimensions: 90.60 x … Continue reading Additional information on the upcoming Sigma 70-200mm f/2.8 DG DN OS Sports lens (E+L mount)