The Sigma AF 70-200 mm APO f/ 2.8 EX DG MACRO HSM is an all-purpose fast zoom lens, providing a high-quality image. A minimum working distance of 100 cm and a maximum magnification of 1:3.5 enable close-up shooting.
It is compact. It is the shortest in its class (as compared with lenses of Tamron, Canon, Nikon).
When used on APS-C (crop) cameras, an equivalent focal length is 112- 320 mm.
The minimum aperture ratio of 2.8 enables shooting in poor lighting conditions without a tripod or a flash.
It is rather sharp at f/2.8. And it is very sharp from f/4 onwards.
A 9-blade aperture produces rather beautiful blurring of out-of-focus areas (bokeh).
The optical scheme of the Sigma AF 70-200 mm APO F2.8 EX DG MACRO HSM includes two SLD elements and two ELD elements, which secures excellent correction of all aberrations. Due to the ultra multi-coating, pictures do not suffer from flare and rereflections.
Owing to the hyper sonic motor (HSM) focusing is rather fast, silent and precise. Manual adjustment of sharpness is available.
It does not have a stabilizer.
For a convenient use of polarized and gradient filters the front lens is non-rotating.
The 1.4x EX DG APO and the 2x EX DG APO teleconverters can be optionally used to increase the range of focal lengths lens up to 98-280 mm (lens speed F4, autofocusing is possible) and 140-400 mm (lens speed F5.6, autofocusing is possible) respectively.
The Sigma AF 70-200mm APO F2.8 EX DG MACRO HSM is a good choice for portrait, genre and candid photography. The lens is fit for many other types of photography according to its characteristics.
A petal hood, a tripod ring and a soft case are included with the lens.
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Posted by: Sergei Borodin Date of publication: 13.08.2010