Di: Digitally Integrated Design, is a designation Tamron puts on lenses featuring optical systems designed to meet the performance characteristics of digital SLR cameras.

The most compact and lightest in the history of fast zoom lenses. Thanks to the revolutionary downsizing "XR" technology employed by Tamron in the development of high-power zoom lenses such as the 28-200mm and 28-300mm, the dramatic compactness that makes this lens the world's smallest and lightest is achieved. Its compactness makes it look and feel like an ordinary standard zoom lens, yet the versatility that a fast constant maximum aperture offers will definitely reshape your photographic horizons.

 

Specifications
Model: A09
Lens Construction (Groups/Elements): 14/16
Angle of View: 75°-32°
Type of Zooming: Rotation
Diaphragm Blade Number: 7
Minimum Aperture: f/32
Minimum Focus: 0.33m (13") (entire zoom range)
Macro Mag. Ratio: 1:3.9 (at 75mm)
Filter Diameter: ø67
Weight: 510g (18.0oz.)
Diameter x Length: ø73mmx 92mm (2.9in x 3.6in)
Accessory: Lens hood
Mount: Canon, Minolta (Sony Alpha), Nikon-D, Pentax