Daily Camera News

Metabones Canon EF Lens to Canon EF-M Mount T Speed Booster ULTRA 0.71x

The new Metabones EF-EOS M Speed Booster ULTRA 0.71x makes full-frame Canon EF-mount lenses one stop faster, 0.71x wider and with increased MFT on Canon EOS M cameras.

Full-frame Canon EF-mount lenses are now one stop faster, 0.71x wider and with increased MFT on Canon EOS M cameras. The 4k/UHD video crop on EOS M50 can also be mitigated with third-party APS-C lenses using this Metabones Speed Booster. Some Canon EF-S lenses may be modified to fit on the Speed Booster but Metabones cannot be held liable for any issues arising from modifications. Using APS-C lenses with Speed Booster for still photography or full HD videography may result in vignetting.

Metabones EF-EOS M Speed Booster ULTRA 0.71x is available right now for USD 479.00 plus applicable taxes, duties and shipping, from Metabones’ web store and its worldwide network of resellers. See: EF-E Speed Booster ULTRA 0.71x.

Metabones Canon EF Lens to Canon EF-M Mount T Speed Booster ULTRA 0.71x Compatibility List

  • Canon EOS M series camera
  • Canon EF-mount Lens
  • Canon EF-Extender (Teleconverter)
  • Carl Zeiss EF-mount Lens (see note 2)
  • Sigma EF-mount Lens (see note 2)
  • Tamron EF-mount Lens (see note 2)
  • Tokina EF-mount Lens (see note 2)
  • Contax N mount lenses modified to Canon EF by Conurus
  • Contax 645 NAM-1 adapter modified to Canon EF by Conurus

Specifications

  • Product name (Model Code):
  • Canon EF Lens to EOS M (EF-EFM Mount) T Speed Booster ULTRA 0.71x (MB_SPEF-EFM-BT1)
  • Dimension: 27.1 x 72.3 x 76.0mm
  • Product Page : https://www.metabones.com/products/details/MB_SPEF-EFM-BT1
  • Weight: 192g
  • Retail Price: USD 479.00
  • Color: Black Satin exterior; Black Matte interior

Full press text can be found here.

Topics: Canon, Photography Tags: , ,
Avatar for Daily Camera Editor Team

Author: Daily Camera Editor Team

“Daily Camera News Team brings you the latest photography gear news, rumors, and reviews, keeping photographers updated with expert insights and hands-on advice.”
0 0 votes
Article Rating
Subscribe
Notify of
guest

This site uses Akismet to reduce spam. Learn how your comment data is processed.

0 Comments
Oldest
Newest Most Voted
Inline Feedbacks
View all comments
© 2025 Daily Camera News.
Daily Camera News is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.
0
Would love your thoughts, please comment.x
()
x