Metabones Canon EF Lens to Sony NEX Mark IV vs speed booster

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clearzoom
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Metabones Canon EF Lens to Sony NEX Mark IV vs speed booster
4 months ago

Metabones Canon EF Lens to Sony NEX Smart Adapter, Mark IV $399

Metabones Canon EF Lens to Sony NEX speed booster, Mark IV $599

what is the diff between these as the 2nd one cost $200 more and is it worth the extra cost.

is the AF better in the 2nd one?

 clearzoom's gear list:clearzoom's gear list
Sony Alpha NEX-6 Sony SLT-A99 Canon EOS 70D Sony a6000 Canon EF 70-200mm f/4.0L USM +6 more
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