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The new lens, with a fast F2.8 design, can counteract camera shake with vibration compensation that Nikon and Canon competitors currently lack.
Not to be left behind in the supertelephoto zoom department, Sigma literally one-ups one of its main rivals with the announcement of two different 150-600mm zoom designs.
Total venture funding goes gangbusters in the second quarter with companies like Airbnb, Pinterest, Uber, and Lyft raising billions.
From CX to full-frame, Tamron's releasing several lenses next week.
Versatile, sturdy, and built with high-quality optics, the Sigma APO 70-200mm F2.8 EX DG OS HSM offers a good value, although it's not exactly cheap.
The Los Angeles Times is reporting that former Microsoft CEO Steve Ballmer is buying the LA Clippers from the controversial Sterling family.
The general-purpose zoom lens costs about $100 more than Canon's equivalent, but Sigma thinks its image quality means the lens is worth the extra money.
The new lens, part of Sigma's high-end "art" product line, will ship in November, but its true competitiveness won't be known until Sigma reveals its price.
Lenses with 16-300mm and 28-300mm zoom ranges could appeal to travel photographers and others who want an all-in-one design.
The third-party lensmaker's new supertelephoto won't cost much more than an earlier 200-500mm model with no image stabilization.