Best-in-Class Optical Performance</br>High resolution thru use of XLD glass</br>New USD (Ultra Silent Drive) motor for fast and quiet AF</br>Dual format Di design for use on fullframe and smaller sensor cameras</br></br>Product Description</br></br>Tamron SP 70-300MM F4-5.6 Di Usd Lens With Hood for Sony Alpha.</br><br/>http://www.amazon.com/gp/product/B003YH9DZO