Rent a Canon EF Lens to Micro Four Thirds Metabones Speed Booster S | BorrowLenses
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Canon EF Lens to Micro Four Thirds Metabones Speed Booster S
Canon EF Lens to Micro Four Thirds Metabones Speed Booster S


The Metabones Canon EF Lens to Micro Four Thirds Speed Booster "S" Version allows you to pair select Canon EF mount full frame lenses with certain active mount Micro Four Thirds cameras (see Notes tab) and increases the effective field of view and the maximum aperture of the lens you're using. This is handy for achieving wider views with more dramatic depth of field effects on what is otherwise a sometimes uncompromising camera sensor due to its small Micro Four Thirds size.

The Speed Booster works by shrinking the image circle of your Canon EF lens down to better fit the smaller sensor of Micro Four Thirds cameras. This has the effect of making the field of view of the lens wider or, in other terms, reducing the crop factor of the camera from 2x to 1.4x. For example, a 40mm lens becomes an effective 56mm with this Speed Booster on a Micro Four Thirds camera instead of the 80mm effective view you'd have with a straight adapter. This is closer to the APS-C view of 64mm for this particular lens length example. Your Micro Four Thirds camera will render less like a Micro Four Thirds sensor and more like the larger APS-C or Super 35 sensor thanks to this Speed Booster, plus you have the benefit of using a wide variety of Canon EF lenses while retaining lens image stabilization.

Please see the "Notes" section for important information about autofocus and lens compatibility.


  • • This Speed Booster is compatible only with EF mount lenses and not Canon EF-S mount lenses.
  • • This Speed Booster is compatible with Micro Four Thirds cameras that have an active mount, found in Olympus OM-D, Panasonic GH-series, and Blackmagic Pocket Cinema cameras. This Speed Booster is not recommended for those using passive MFT mounts.
  • • When using lenses with apertures faster than f/1.8, the pre-boost apertures will be displayed in the camera. For example, it won't show f/0.7 with a f/1.2 lens attached. It will show f/1.2. The widest aperture where you'll see a boost displayed is f/1.8 (which will show f/1.0). The "boosting" is still occurring, it just doesn't show it on read-out for these ultra-fast lenses.
  • • While technically compatible with any EF mount lens, please take notice if your third-party lens has any mount protrusions, like spikes or levers. These will damage the Speed Booster.
  • • Autofocus is not supported with this Speed Booster.
  • • There is no support for Focus Stacking or Focus Bracketing with your Olympus when paired with this Speed Booster.
  • • The following EF mount lenses have been tested by Metabones for use with this Speed Booster. Other EF lenses are certainly compatible but the following have been fully vetted by Metabones:

  • Canon EF 20-35mm f/3.5-4.5
  • Canon EF 24-70mm f/2.8L II
  • Canon EF 24-105mm f/4L
  • Canon EF 50mm f/1.4
  • Canon EF 50mm f/1.8
  • Canon EF 70-200mm f/4L
  • Canon EF 70-300mm f/4-5.6L
  • Canon EF 85mm f/1.2L II
  • Canon EF 100mm f/2.8
  • Sigma 18-200mm f/3.5-6.3

  • • Front Cap
  • • Rear Cap
  • • Detachable Tripod Foot
  • • Allen Wrench
  • • Carrying Case

  • • Tripod Foot is Detachable and Compatible with Arca Swiss, Markins, Photo Cam Ball Heads
  • • Increases Maximum Aperture by 1 Stop and Increases Angle of View By 0.71x
  • • Retains Electronic Communication Between Lens and Camera
  • • Powered by Camera Body
  • • Manual Focus Only
  • • Lens-Based Image Stabilization Supported

    There is no manual for this product.


    Canon EF Lens to Micro Four Thirds Metabones Speed Booster S

    Rent a Canon EF Lens to Micro Four Thirds Metabones Speed Booster S. BorrowLenses provides rentals for professional photographers, videographers, and photography/videography hobbyists.
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