Tamron only just recently announced the development of the Tamron 50-400mm F/4.5-6.3 Di III VC VXD and B&H Photo has already published a listing with some additional details. Key Features E-Mount Lens/Full-Frame Format 1:2 Magnification, 9.8″ Min. Focus Rapid Zoom Ring Zoom Lock Switch VXD eXtreme-Torque Drive Linear AF Motor Focus Limiter Function VC Image … Continue reading Tamron 50-400mm F/4.5-6.3 Di III VC VXD Listed