Metabones Announces New MFT to Canon EF Speed Booster Adapter. $599US



Metabones has finally announced the new micro four thirds MFT to Canon EF mount speed booster. This puppy will decrease the crop on the Panasonic GH4 to about 1.7X according to Andrew Reid over at Here is a rip from his site and the specification breakdown from the metabones site. The MFT to EF speed booster retails for $599 US and is available now through the metabones website. We should have them in stock here very soon.

Click here to check out

Click here to check out the Metabones website. 

“In 4K mode on the GH4 we end up somewhere between 1.7x and 1.8x crop depending on the type of 4K resolution selected. The 4096 x 2160 DCI 1.85:1 mode of course uses more of the sensor area to record the image thus the crop factor is a little less. In stills mode and with the internal 1080p recording the crop factor with Speed Booster is 1.5x, or actually in cinematography terms a 1.0x because it is Super 35mm.”


Key Features

  • Increase maximum aperture by 1 stop.
  • Increase MTF.
  • Makes lens 0.71x wider.
  • Build-in electronics to control lens aperture.
  • The lens aperture is set by the controls on the camera body.
  • Powered by camera body. no external power source required. (also accept 3rd party external power supply via MicroUSB socket)
  • High performance 32-bit processor and efficient switched-mode power supply.
  • The tripod foot is detachable and compatible with Arca Swiss, Markins and Photo Clam ball heads.

Optics designed by Caldwell Photographic in the USA (patent pending)


Jared Abrams is a cinematographer based in Hollywood, California. After many years as a professional camera assistant he switched over to still photography. About two years ago a new Canon camera changed the way the world sees both motion and still photography. He just happened to be in the right place at the right time.
  • Jezz

    I wonder if they will work on the BMCC and BMPCC, not to mention the AF100?

  • MoricErianna

    I want to share my testimony with the public at large about what this man called Dr.Malaa just made for me, just the man to bring back my Ex husband lost me with his great spell, I married my husband we were together for a long time and we loved ourselves, but when I was unable to give a child of 2 years left me and told me I can not go more then I was now looking for ways to bring it back until a friend of mine says me about this man called Dr. Malaa and give me your email contact (, then you’re not cgoing to believe this when I contacted this man in my problems this spell prepared and bring I lost my husband again, and after a month i miss my month and go for a test and the result declared am happy I am pregnant now a mother of a girl, thanks again so great Dr.Malaa you’ve done for me, if you are passing by through this same kind of problems you can contact him today in the mail (