Canon 200-400 f/4 reviewed by "Chasseur d'Images"

Started Jun 20, 2013 | Discussions thread
qianp2k
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Re: Canon 200-400 f/4 reviewed by "Chasseur d'Images"
In reply to Oldvic, Jun 20, 2013

Oldvic wrote:

They tested for sharpness at 560mm using an external 1.4x converter and found no significant difference for most apertures, f/32 being the exception: the external converter reaches a sharpness level of 80% as opposed to the 65% of the internal one.

Thanks for quote. Just want to be clear that in above sentence - external 1.4x TC is better or worse than internal 1.4x TC? It doesn’t make sense if external TC actually is better.

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