Metabones ALPA to E-mount/Sony NEX Speed Booster ULTRA (Black Matt)
- Increase maximum aperture by 1 stop.
- Increase MTF.
- Makes lens 0.71x wider.
- Advanced 5-element/4-group optical design incorporating ultra-high index tanatalum-based optical glass by Caldwell Photographic in the USA (patent pending).
- The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo Clam ball heads.
- Disclaimer: we are NOT licensed, approved or endorsed by Alpa or Sony
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