Sigma 70-200mm f/2.8

The Sigma 70-200mm f/2.8 EX APO Macro HSM telephoto zoom lens has a large maximum aperture of f/2.8 which remains constant throughout the zoom range, has improved macro capabilities, and is optimized for digital SLR cameras.
This updated version has improved macro capability, with a minimum focusing distance of 39.4" (100 cm) and maximum magnification of 1:3.5. All zooming and focus movement is achieved internally, allowing for a constant length and great resistance to dust and moisture. Rendered in a hard coated, baked black EX crinkle finish.
The Hyper Sonic Motor (HSM) ensures a silent, high-speed AF function as well as full-time manual focusing capability.
This lens can also be used with the 1.4x EX or 2.0x EX APO Tele Converters (optional), becoming a 98-280mm f/4 autofocus telephoto zoom lens or a 140-400mm f/5.6 autofocus telephoto zoom lens respectively.
DG Lens Design
 
The improved DG lens design corrects for various aberrations. This lens is specially coated to get the best color balance whilst cutting down on ghosting caused by reflections from the digital image sensor.
HSM (Hyper Sonic Motor)
 
Hyper Sonic Motor provides smooth, silent AF with fulltime manual focus override.
ELD & SLD Elements
 
This lens uses three ELD (Extraordinary Low Dispersion) elements and two SLD Special Low Dispersion elements for utmost correction against chromatic aberrations.
Tripod Mount
 
A rotating tripod mount can be conveniently detached if required.

Filter Size
77mm

f/Stop Range
2.8-22

Minimum Focus Distance
100cm / 39.4 inches

Magnification
1:3.5

Zoom/Focus Control
Two-touch

Angle of View
34.3-12.3

Groups/Elements
15/18

Tripod Collar
Yes (removable)

Length
7.3" (184mm)

Maximum Diameter
3.4" (86mm)

Weight
3 lb (1.380 kg)
Item Includes: Sigma Zoom Telephoto 70-200mm f/2.8 II EX DG APO HSM Autofocus Lens, Front & Rear Caps, Lens Hood, Soft Case with Strap