Tamron Auto Focus 70-300mm f/4.0-5.6 Di LD Macro Zoom Lens for Canon Digital SLR Cameras (Model A17E) (International Model) No Warranty 9 Groups, 13 Elements Lens Construction Rotation Type of Zooming 9 Diaphragm Blade Number F/32 Minimum Aperture 59 inch Minimum Focus Distance (1.5m) in normal setting, 37.4 inch (0.95m) in macro mode f=180mm-300mm range