Quote:
Originally Posted by Ukastronomer
I have an argument with other photographers about prime v zoom lenses, I prefer zoom and use them as a paid sports photographer.
Put the same back on an 80-400 ED zoom such as the Nikkor and get three other bodies place a Nikkor 80-200-400 prime on each, shoot the same image NOT in a lab but real life, same settings and I challenge anyone to see any difference.
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Hi J,
At the risk of opening a second front 
, I can't agree: I think one would see differences in image quality between the Nikkor 80-400 ED and certain Nikkor primes in the same focal length range. Demonstrating that over the internet is not an easy task, since it would require identical subjects photographed with the same settings and then analysed in some way: quantitatively or qualitatively.
Identical images to compare are difficult to come by (unless one owns all the lenses) or is prepared to accept images of optical test charts (ąsome analysis). You also expressed a certain reluctance/disinterest in LAB tests. If that extends to images of optical test charts, it may be difficult to provide objective evidence of any differences.
As the discussion may grow and it's a little off-topic already, It may be better to discuss this in a new thread, if you want to.
Best
JA