Reviews and Problems with Sigma 28-70mm F2.8 EX DG
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Lens Test: Sigma 28-70mm f/2.8 EX DG AF
15 November 2004
Excerpt: Originally published September 2005. WHAT YOU SHOULD KNOW: The fourth generation of Sigma's pro-caliber, EX-series 28-70mm f/2.8, this version features a smaller filter size (from 77mm down to 67mm), improved coatings to control ghosting with digital SLRs, a significantly closer focusing distance (from 19 down to 12 inches), and now a zoom lock. Compared to the Tamron 28-75mm f/2.8, it's slightly more compact (3.4 vs.
Conclusion: As a fast and relatively lightweight lens for standard to short telephoto work, this lens has a lot going for it. Although small and light for it’s genre, it is well built, nicely torqued and felt right in use. The picture quality was good throughout and excellent when stopped down. The filter size is not so big that a mortgage is needed for filters and the supplied hood works well. I can see that belt loop ending up on my belt!
Pros: Picture quality, especially edges., Size and weight for f/2.8 lens., Price (especially from ePz shop)