Tamron has just officially announced the new Tamron 28-200mm F2.8-5.6 Di III RXD Lens.  It is a versatile zoom lens for full-frame Sony mirrorless cameras, featuring 18 elements, including glass-molded aspherical, hybrid aspherical, XLD (extra low dispersion) and low dispersion…. Read moreTamron 28-200mm F2.8-5.6 Di III RXD Lens Announced, Priced $729, Available for Pre-Order