Rodolfo Paiz Offline Dedicated FM Upload & Sell: On
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People keep talking about the "400/2.8" and I'm not at all convinced that everyone is talking about the VR model. Some posts mention VR, some don't. If you compare the 200-400 to an older lens, the 200-400 will get a competitive advantage in the image quality department while becoming less competitive in price. Still, I think that the conclusions are pretty much the same: you can take images for Sports Illustrated or National Geographic with the 200-400 without batting an eye, so the IQ advantage of the primes is real, but pretty marginal. Where you really must move to the primes is when you truly need instantaneous focus and/or the extra stop of light. If those aren't true, then it's your choice as to what you feel is best, or what you like best.
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