28-300MM F5.6-6.3 Lens for Canon AF

"This dramatically different Tamron lens is a marvel of engineering and a joy to use. Its startling 28-300mm range (10.7x zoom range!) will have you prepared for any photo opportunity which presents itself. Its revolutionary LD-Hybrid Aspherical Element design provides unparalleled optical quality. Tamron's Internal Focusing System provides extra benefits to users. Chief among them is a reduced minimum focusing distance throughout its entire focal length range. Additionally, it improves optical characteristics by minimizing illumination loss at image corners and suppresses aberrations that are caused by focusing positions. Another benefit of Internal Focusing is a stationary focusing ring - regardless of the focusing action. Quick and subtle manual focus adjustments, should you choose to make them, are now a snap."