"A New Chapter in the Distinguished History of Tamron's 90mm Macro Lenses A Legacy of Superior Optical Performance Now Reaches a New Plateau with Enhanced VC Functionality and Advanced Features The SP 90mm F/2.8 Di MACRO VC (Model F017) is the most recent release in a successful line of Tamron SP 90mm macro lenses. It redefines the best in advanced features and succeeds a legacy of superior optical performance. XY-Shift compensation has been newly added to reinforce VC functionality, further improving image stabilization capabilities at any shooting distance from infinity to macro. Advancements in USD control software have also increased AF focusing speed and optimally fine-tuned for various framing conditions. Furthermore, a high standard of Moisture-Proof and Dust-Resistant Construction has been added to prevent intrusion of dust or water droplets. Highly durable, Fluorine Coating is applied to the top element surface and efficiently prevents condensation of moisture and repels smudge-causing substances. Meticulous craftsmanship is demonstrated in every detail of the exterior design of the newly transformed SP 90mm macro lens. The user can feel it in the exquisitely smooth texture of the metallic barrel. Outstanding Depictive Capabilities and Anti-reflection Efficiency The lens features an optical construction of 14 elements in 11 groups, including one LD (Low Dispersion) and two XLD (extra Low Dispers|Tamron 90mm macro lens: Rebirth of a classic with a legacy of superior optical performance, enhanced VC functionality and advanced features|Built upon the outstanding optical performance of the legendary Tamron 90mm Macro|Optimized for spectacular background blur effects (bokeh)|VC enhanced with shift compensation to compensate for skae on the x-y plane|USD actuator maximized for macro photography is fast, accurate and quiet|Moisture-Proof and Dust-Resistant Construction|A durable Fluorine Coating on the front element repels water and fingerprints|Advanced coating technology reduces flare and ghosting|Use of circular aperture to achieve beautiful, rounded blur effects (bokeh)|Focusing options perfectly suited to a macro lens|Digital image editing software optimized for Tamron lenses|New SP Design"