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Canon 200mm f2 L vs. 200-400mm f4 L

Started Sep 9, 2016 | Discussions thread
OP Ran Plett Senior Member • Posts: 1,051
Re: Canon 200mm f2 L vs. 200-400mm f4 L

Rey66 wrote:

I tested the canon 1.4x II with YN 1.4x III and the YN is much sharper optically, but unfortunately the AF will not work on A7rII so I returned it.. But I can imagine it will be the same with the canon version.. Just for reference..

https://www.dpreview.com/forums/post/58547911

Interesting. If I'm not mistaken, the center sharpness seemed higher, but at the expense of edge sharpness? And bummer about AF not working. You really Frankenstein'd that up with a third party TC, Sony body, Canon lens and a Metabones adapter. It's kind of a miracle that anything worked! Anyway, thanks for letting us know about the Yongnuo TC, never heard of it.

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