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    80-400 VR or 300 f4 with 1.4tc?

    Interesting thread.I am just about to part exchange my 1 year old Sigma 120-300 f2.8 for the Nikon 80-400.I have not been able to get my hands on a 300mm afs to compare. Living not far from warehouse express i took one of my D100s to try out both lenses,they let you do that there.They only had...