The Tamron 50-400mm F/4.5-6.3 Di III VC VXD is remarkably compact with a length of just 18.3cm and a light weight of 1.155g but provides unparalleled high performance at all focal lengths. The lens also features ergonomic features that support comfortable shooting, such as the adoption of a new lens design with improved texture and operability, and a Connector Port for the dedicated Tamron Lens UtilityTMoriginally and uniquely developed by Tamron.