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| Re: Review: Canon EF 200–400mm f/4L IS 1.4x |
Quote from Andy Rouse off Facebook in reference to the 200-400L:
"And as for the comments about sharpness I tested it against my 600 and it's the same."
I wonder if he tested those two lenses at 600mm f/4 or perhaps at 840mm f/5.6 ?
Incidentally, I tested my 200 f/2.8 prime against 300 f/2.8 IS MkI, and I couldn't see much sharpness difference either.