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Mount Adapter - Metabones EF/Sony E Speed Booster Ultra

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Mounted between a mirrorless camera and a SLR lens, Speed Booster® increases maximum aperture by 1 stop (hence its name), increases MTF and makes lens wider by a factor of 0.71x. Optics designed by Caldwell Photographic in the USA (patent pending). 

Metabones Product Website


Rent for $25.00/day
Rent for $25.00 per day


  • Canon EF Lens to Sony E-Mount Body
  • Increases Angle of View by 0.71x
  • Increases Maximum Aperture by 1 Stop
  • Switch for In-Body Image Stabilization
  • Smooth Iris with Select Adapted Lenses
  • Support for Phase & Contrast-Detect AF
  • Programmable Fn Button; Status LED Light
  • Transfers EXIF Data to Camera
  • Weather-Resistant Rubber Mount Gasket
Lens Info
Lens MountCanon EF
Sony E
Lens SeriesSpeedbooster
FormatSuper 35

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