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- Rob
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Having bought Nick's D500 on here I'm wanting to upgrade my main walkabout zoom lens soon, currently using a Nikon 16-85 f3.5/5.6 VR. Has anyone compared the Nikon 16-80 f2.8/4 ED VR with the Sigma 17-50 f2.8 OS EX DC HSM ? The Sigma is tempting due to the constant 2.8 aperture and lower price but is it as good as the Nikon? One review I read criticised it for not being as fast to focus or as good at tracking. Also how does the equivalent Tamron stack up? Thanks.