Metabones Speed Booster Ultra

If you’re canon glass with your FS7/Fs5/A7S setup then this is the adapter you need. The Speed Booster  has optics within it so the crop factor at the wide end is minimal and with that has a bonus, you get some more light into the camera,as much as a full stop and don’t need to bump up the ISO as much.

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  • Canon EF Lens to Sony E APS-C Body
  • Full-Frame Lens to Sony E APS-C Body
  • Supports In-Camera Aperture Control
  • 0.71x APS-C Crop Factor Compensation
  • 1-Stop Increase in Lens Apertures
  • 5 Optical Elements in 4 Groups
  • Locking Mechanism to Secure Lens
  • Push-Button Lens Release
  • Brass Mounting Rings
  • Detachable Tripod Foot

*Use it with the SONY FS7 and A7S II

The Metabones Speed Booster Ultra 0.71x Adapter for Canon Full-Frame EF-Mount Lens to Sony E-Mount  allows a full-frame Canon EF-mount lens to be mounted onto a Sony E-mount camera. While doing so, the adapter’s optics help to maximise the connected lens’s apparent angle of view while providing a 1-stop increase for the camera over the lens’s aperture range.

If a lens intended for 35mm film or similarly sized full-frame camera sensors is connected to a camera with a Sony E-mount APS-C-sized sensor, it would project an image larger than the Sony E-mount APS-C sensor was built to accept. Able to capture only the center portion of the projected image, the effective angle of view of the lens would be narrowed, creating an in-camera “crop factor.” The T Speed Booster Ultra 0.71x Adapter for Canon Full-Frame EF-Mount Lens to Sony E-Mount APS-C Camera condenses the light from a lens designed for 35mm film or “full frame” camera sensors and projects it onto a Sony E-mount APS-C sensor. This allows a Sony E-mount APS-C sensor to utilize more of the light gathered by a connected lens, which effectively reduces the crop factor while making available to the sensor an additional 1 stop of light for each of the lens’s f/stop settings.


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