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

Started Sep 9, 2016 | Discussions thread
Rey66
Rey66 Senior Member • Posts: 1,587
Re: Canon 200mm f2 L vs. 200-400mm f4 L

Ran Plett wrote:

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.

Yes with TC the center fall off little bit but not by much, it was worse on canon TC II, OTOH, the YN 2X TCIII works like a charm specially birding and some macro like shots..

http://petapixel.com/2015/01/05/yongnuos-clone-canon-2x-teleconverter-costs-180-instead-449/

 Rey66's gear list:Rey66's gear list
Canon EOS R5 Canon MP-E 65mm f/2.5 1-5x Macro Canon Extender EF 1.4x III Canon Extender EF 2x III Canon EF 35mm F2 IS USM +2 more
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