Will the Metabones adapter Canon EF Lens to Micro Four Thirds T Speed Booster XL 0.64x work with my lenses and camera?

Q. Will the Metabones adapter Canon EF Lens to Micro Four Thirds T Speed Booster XL 0.64x work with my lenses and camera?

A. There are a few limitations with the adapter -

  • Supports only Panasonic GH4, GH3, G3, G5, G6, G7, G10, GF3, GF5, GF6, GX1, GX8, GX80/GX85, Olympus E-PL7, Blackmagic Cinema Camera with Micro Four Thirds mount**, Blackmagic Pocket Cinema Camera***
  • EF-S lenses require modification to fit (but third party DX lenses can be used without modification)

Which cameras are supported by the adapter -

Although the Speed Booster XL 0.64x has extra clearance compared to the 0.64x BMCC Speed Booster, there are still a number of Micro Four Thirds cameras that are not supported due to mechanical clearance issues.  This is summarized in the table below, which is color-coded so that Green means the camera is supported and Red means the camera is not supported. 

Note that many of the Red-coded cameras actually do function, but there is a minor interference with the protective shutter cover.  Although slight contact with the shutter cover appears to have no effect on the functioning or cosmetics of either the camera or the Speed Booster we cannot support these combinations due to possible risk of damage.

Which lenses are supported by the adapter - 

New in Speed Booster XL for Canon EF Mount to Micro Four Thirds is autofocus support, subject to certain limitations (see table above for details). We are pleased to report that Panasonic Micro Four Thirds camera bodies are capable of autofocusing accurately even if the maximum aperture of the Speed Booster and the lens combined is in the sub-f/1.0 range. Although our first and foremost priority is accuracy, we are able to make great strides in autofocus speed as well.

Other limitations include - 

  • EF-S and third party DX lenses may not cover the full Micro Four Thirds sensor in still photo and FHD video modes (but will cover 4k video mode)
  • No video AF for Olympus
  • AF may not work if the maximum aperture of the lens plus any EF Extender or other teleconverter attached is smaller than f/8 before boost or smaller than f/5.1 after boost.
  • AFC (continuous AF) and AFF (flexible AF) modes are not supported
  • Panasonic Video AF may hunt more than a native lens or have unsatisfactory performance.
  • Tamron lenses may have unsatisfactory Video AF accuracy. Canon and Sigma lenses are fine.
  • No support for Focus Stacking and Focus Bracketing on Olympus.
  • On Olympus, other than E-M1, you may move the single AF point among any of the 81, but you may not multi-point AF. There is no restriction on E-M1 and Panasonic.
  • Very early Olympus models (e.g. E-PL1) have no autofocus support.
  • EF-mount lenses are not silent but may make audible click noises during autofocus operation and iris changes which may be picked up by the built-in microphone of the camera. An external microphone is recommended for video.
  • Iris changes are in 1/8 stop steps which may be noticeable in video recordings. Programmed exposure mode and shutter priority exposure mode should not be used for video.
  • No support for in-camera correction such as peripheral shading, CA and Distortion.

More information and limitations can be found on the Metabones website found on  this link