Best 24-70 f/2.8mm for handholding on D800?

Chris, your question implies that you prefer image stabilization and so Tamron is the way for you. But have a look at this comparo from Camera Labs. To make the comparo more interesting, they included the Nikon 24-85 VR.

http://www.cameralabs.com/reviews/Nikon_vs_Tamron_24-70mm_comparison/

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Peter
Ontario, Canada