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Sunday, April 1, 2007

Sigma Macro 70mm f/2.8 EX DG

A versatile lens with a fast aperture and popular focal length for D-SLRs

Sigma Macro 70mm ƒ/2.8 EX DG
The Sigma performed very well in the field. It’s well balanced and has a nice finish that's comfortable to hold. In addition, images taken with this lens look great. It includes three low-dispersion glass elements in the lens, which are used to correct many lens aberrations, and that’s certainly evident here. I can’t give you the optical bench qualities of the lens (we don’t have that capability), but frankly, what matters to me is how a lens works on real subjects. I found this lens to be a very capable macro lens with excellent sharpness and color rendition. While designed to optimize digital macro photography, the Sigma 70mm macro works just fine on film and full-frame digital cameras, too. Estimated Street Price: $480.

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

Specs Of Note
Focal Length: 70mm
ƒ-Stop Range: ƒ/2.8-ƒ/22
Filter Size: 62mm
Lens Construction: 10 elements in nine groups (includes three SLD glass elements)
Size: 3.0x3.7 inches
Weight: 18.5 ounces
Mounts: Canon, Nikon, Sigma (Sony and Pentax TBA)

Standout Features
1 Fast ƒ/2.8 70mm macro lens for digital cameras
2 True 1:1 macro focusing capability at 10.1 inches
3 Focal length gives 35mm angle-of-view equivalent to 105mm when used on most digital SLRs


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