The new SP70-200mm F/2.8 G2 (Model A025) telephoto lens reimagines the highly acclaimed Model A009 with enhanced optical performance, improved VC (Vibration Compensation), faster AF speed and accuracy, and shortened MOD (Minimum Object Distance) for greater flexibility. What’s more, compatibility with Tamron tele converters provides additional focal length. In keeping with the SP series’ innovative technology, the lens is designed to be durable, flexible and resilient enough to rise to any occasion. Every aspect of the SP 70-200mm F/2.8 G2 (Model A025) zoom has been improved, providing high image quality and enhanced bokeh throughout. Optical design features include XLD (extra Low Dispersion) and LD (Low Dispersion) glass to eliminate chromatic aberrations across the entire zoom range, ensuring optimum resolution― even at the edges. eBAND Coating designed exclusively for this new zoom offers superior anti- reflection properties, greatly minimizing flare and ghosting. And refined bokeh provides spectacular background effects from nearly any angle. Tamron’s best-in-class VC* image stabilization performance is equivalent to 5 stops**, according to CIPA standards. Plus, this lens offers a choice of three VC modes, including one exclusively for panning. Now you can match the VC mode to your shooting conditions and enjoy sharp, jitter-free handheld shooting―even in low light. * Among 70-200mm F/2.8 interchangeable lenses for full-frame DSLR cameras. 
(As of January, 2017. Source: Tamron.)
** Using in VC MODE 3 For Canon: 5D-MKIII is used For Nikon: D810 is used Products not sold by Tamron Authorized USA Dealers in the USA are considered gray market and as such do not qualify for rebates (if applicable), warranty, service or repair of any kind in the USA. Tamron USA, Inc. will not repair and/or service any product that is not an officially imported product and sold through an Authorized Tamron USA Dealer. In other words, there will be no authorized repair service under any circumstance for gray market products, including but not limited to any available firmware updates. Due to the proprietary technology incorporated in Tamron lenses, specific factory calibrated equipment is required to service many of our lenses and therefore Tamron USA, Inc. does not authorize any third party service center to repair and/or service Tamron products. Tamron USA, Inc. maintains a 3-day turnaround for all Tamron USA products sent in for service. Furthermore, third party warranties are not serviced through Tamron USA, Inc. and are therefore invalid in that they are not able to offer service for these lenses for the reasons stated above. Only Tamron USA lenses purchased from an Tamron Authorized USA Dealer come with a 6 Year USA Factory Warranty (see http://www.tamron-usa.com/support/warranty_statement.pdf ), the only warranty that is valid for service in the USA. CAUTION WHEN PURCHASING ON THE INTERNET: Some major shopping websites employ third party sellers to enrich their offerings. Therefore, purchases made on a specific website may NOT be sold, shipped, or even supplied by that website, but rather by a third party marketplace seller that may or may not be a Tamron Authorized USA Dealer - even though that website itself may be listed as a Tamron Authorized USA Dealer. If purchasing through a website listed as a Tamron Authorized USA Dealer, please verify that the product itself is being sold and shipped directly by that website or, if not, sold and supplied by a seller that is listed as a Tamron Authorized USA Dealer.