Quote:
Originally Posted by The1
great shots guys! the 400 5.6 would be interesting. Already have those numbers covered with IS on my 100-400 however, so i'm not rushing to get one
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The IQ is really close between those two lenses. Neither will work decently with a 1.4x TC except on a 1D Mkxx body. I think you're right to stick with what you've got. Shoot at ISO 800 and stop down a couple of stops and you can't tell them apart. Save for a 500mm if you want to keep shooting wildlife and birds.
Dave