The previously rumored Tamron 17-50mm f/4 Di III VXD lens (model A068) for Sony E-mount is now officially announced (development announcement): Full-Frame | Constant Max Aperture: f/4 Ultra-Wide to Normal Zoom Lens VXD Linear Motor Focus Mechanism Internal Zoom & Focus Moisture-Resistant Construction Fluorine Coating Check price Additional information: TAMRON announces development of world’s first* … Continue reading Tamron announces the development of a 17-50mm f/4 Di III VXD lens for Sony E-mount