I'm in a Portuguese auction and don't know what to should be the best option in low light in a GH1 between NIKON AF NIKKOR |70-300mm| 1:4-5.6 G or SIGMA UC ZOOM |70-210mm |, any advise?
Not sure about the Sigma, but the Tamron 70-300 VC is equal to Nikon in sharpness at short and medium focal lengths, and beats it out on the long end. Should be cheaper, too.