The Metabones Speed Booster increases maximum aperture by 1 stop (hence its name), increases MTF and has a focal length multiplier of 0.71x. For example, the Canon EF 85mm f/1.2L II lens becomes a 59mm f/0.9 lens on a Sony NEX camera, with increased sharpness. The faster F-stop allows for shallow depth-of-field and a lower ISO setting for decreased noise.
Speed Booster serves double-duty as a lens mount adapter, from Canon EF lens (but not EF-S) to Sony E-mount, with auto-aperture, image stablization, EXIF and (slow) autofocus support for late-model (post-2006) Canon-brand lenses.
Increase maximum aperture by 1 stop.
Makes lens 0.71x wider.
Electronic integration of aperture diaphragm, controlled by or from the camera body.
Partial autofocus support for late-model (post-2006) Canon-brand lenses.
Powered by camera body. No external power source required.
The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo cam ball heads.
- Front & rear caps.