As promised last November, Sony has announced two new full-frame A-mount lenses. Compared to their 2008-vintage predecessors the Vario-Sonnar T* 16-35mm F2.8 ZA SSM II and 24-70mm F2.8 ZA SSM II feature improved image quality, less ghosting and flare, and a four-fold improvement in subject tracking speed, according to Sony. Another addition are seals that should make these lenses dust and water resistant. More details
Articles: Digital Photography Review (dpreview.com)