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    80-400 VR or 300 f4 with 1.4tc?

    I have no experience with the 80-400 but I do have the 300 f/4 AF-S, and the latter has got to be faster focussing in marginal light because it's a faster lens, especially on the long end. Optically, the 300 f/4 is outstanding, even wide open or with the TC14eII - I'd be very surprised if...
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