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Friday, December 1, 2006

Sigma APO 70-200mm f/2.8 EX DG Macro HSM


A new lens with macro capability and high image quality


The resulting photographs were very sharp, but I was especially impressed with the lack of chromatic aberration and color fringing, which can be a big issue with D-SLRs. Despite the fact that I was using the lens with moderate to wide apertures, there was little evidence of problems, even in areas of high contrast. This is a testament to the quality of the Extra Low-Dispersion and Special Low-Dispersion elements, which are part of the lens design.


Impressive for its price, build and optical quality, the Sigma 70-200mm lens will no doubt find itself in the hands of many outdoor shooters. List Price: $1,140.

Contact: Sigma Photo, (631) 585-1144, www.sigma-photo.com.

Specs Of Note
Focal Range: 70-200mm
Aperture: ƒ/2.8-ƒ/22
Filter Size: 77mm
Lens Construction: 18 elements in 15 groups
Size: 3.4 x 7.3 inches
Weight: 48.7 ounces

Standout Features
1 Two Extra Low-Dispersion and two Special Low-Dispersion elements
2 HyperSonic Motor for fast and quiet autofocus performance
3 Reproduction of 1:3.5 for close-up photography
4 Available for Canon, Nikon and Sigma mounts



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