Metabones Speed Booster "ULTRA" -

Started Aug 31, 2014 | Discussions thread
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Metabones Speed Booster "ULTRA" -
Aug 31, 2014

Has anyone heard, seen or used a Metabones Speed booster "ULTRA" model?

Adorama has one listed on its website for $449, $50 higher than the "regular" model..

However, that page contains no descriptions or specifications on the item, except that it will accept orders for $449.00.

See ULTRA Model listed at Adorama

Similarly, Metabones' website contains no mention of the "Ultra" model.

Can anyone chime in the differences? I intend to use a Rokkor 58mm f/1.2 with the Metabone Speed Booster and would like to know the differences "ULTRA" model brings before making the purchase


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