Tamron Auto Focus 70-300mm f/4.0-5.6 Di LD Macro Zoom Lens for Canon Digital SLR Cameras (Model A17E)

Tamron Auto Focus 70-300mm f/4.0-5.6 Di LD Macro Zoom Lens for Canon Digital SLR Cameras (Model A17E) 9 Groups, 13 Elements Lens ConstructionRotation Type of Zooming9 Diaphragm Blade NumberF/32 Minimum Aperture59 inch Minimum Focus Distance...