DPreview a écrit :Sigma has unveiled a new large aperture image-stabilized standard zoom, in the shape of the 18-50mm F2.8-4.5 DC OS HSM. This lens features a new Optical Stabilization unit which Sigma claims will work on Sony and Pentax bodies with in-body stabilization systems.

Cette optique, ainsi que le 55-200 qui va avec, a l'air très interessante (ouverture max et stab). Curieux de voir ça.