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Old Jan 16, 2007, 12:28 PM   #10
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Join Date: Feb 2004
Posts: 1,423

Even when using 1.4xTC on my 400mm prime, I wish I had at least 500mm to start with. Rarely I am close enough where zoom would be nice. I do have 100-400L but using that less often as it is not 400mm on long end and I can use the prime wide open at f5.6. Also 1.4xTC works much better on the prime than the zoom. My next lens would probably be 500mm f4 IS.
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