Metabones Leica R to Sony E Mount Ultra Speed Booster

DISCMCB MB_SPLR-E-BM2

Increase maximum aperture by 1 stop.
Increase MTF.
Makes lens 0.71x wider.
Optics designed by Caldwell Photographic in the USA (patent pending).
The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo cam ball heads.