Metabones EF to E-Mount T Speed Booster ULTRA 0.71x II (Black Matt)

Full-Frame EF-Mount Lens to Sony E-Mount APS-C Camera

Metabones EF to E-Mount T Speed Booster ULTRA 0.71x II (Black Matt)

Metabones EF to E-Mount T Speed Booster ULTRA 0.71x II (Black Matt)

Full-Frame EF-Mount Lens to Sony E-Mount APS-C Camera

SKU: MB_SPEF-E-BT4

Cat no: 16169

  • Canon EF Lens to Sony E-Mount Body
  • Increases Angle of View by 0.71x
  • Increases Maximum Aperture by 1 Stop
  • Switch for In-Body Image Stabilization
  • Smooth Iris with Select Adapted Lenses
  • Support for Phase & Contrast-Detect AF
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£515.00 (ex vat) £618.00 (incl vat)

Metabones EF to E-Mount T Speed Booster ULTRA 0.71x II (Black Matt)


Realize the full potential of your full-frame Canon EF-Mount glass on your APS-C and Super35 format Sony E-Mount cameras with this Metabones Canon EF to Sony E-Mount T Speed Booster ULTRA II 0.71x. Utilizing advanced optics, this adapter will increase the apparent angle of view of your full-frame lens by 0.71x, effectively combating the crop factor of an APS-C camera. This also increases the apparent sharpness of your image while also increasing the maximum aperture by 1 stop, making your full-frame lens look as if it were mounted on a full-frame camera.

Further improving on previous generations of Smart Adapters, this fifth-generation model now features a rubber gasket to protect the camera's mount from dust and moisture, offers a status notification LED light to check operation modes, and provides a dedicated switch that controls in-body image stabilization of select cameras. Also, this version is compatible with the Sony PXW-FS7 Mark II video camera.

This adapter is equipped with numerous capabilities thanks to the use of a high-performance 32-bit processor. The features include support for both phase-detect and contrast-detect AF systems, as well as the ability to control the aperture from the camera body. Smooth iris effects are possible on select lenses, and 5-axis stabilization is available thanks to communication of distance information with supported lenses. Also, it features a programmable function button, enables electronic (focus-by-wire) manual focusing, transmits EXIF data to the camera, and works with in-lens image stabilization. Additionally, distance and zoom is displayed on certain camcorders and mirrorless cameras, auto magnify can be enabled, and it can automatically switch into APS-C mode, depending on the lens used.

Beyond electronic communication, the adapter has many physical advantages as well, such as a black felt flocking on the inside of the adapter that prevents reflections. For larger lenses, there is a removable Arca-type compatible tripod foot with a 1/4"-20 thread on the base.

  • Allows users to adapt a full-frame Canon EF-Mount lens to an APS-C/Super35 Sony E-Mount camera, or a full-frame camera in APS-C mode.
  • Advanced 5-element in 4-group optical construction uses ultra-high index tantalum-based glass, increasing the angle of view of a full-frame lens by 0.71x, and the maximum aperture by one stop. This effectively compensates for the 1.5x crop factor of APS-C cameras and provides an image like that of a full-frame lens on a full-frame camera.
  • Electronic contacts permit transmission of data between the lens and camera enabling autofocus, auto exposure, image stabilization, aperture control from the camera body, saving EXIF information, and more.
  • Status notification LED light on the adapter will show the user what mode the adapter is currently in.
  • Dedicated switch for controlling in-body image stabilization.
  • Programmable function button for rapid access to commonly used settings and features.
  • Support for phase-detect AF with the a7R II, a7 II, a6500, and a6300 cameras.
  • Compatible with Sony PXW-FS7M2 (Mark II) camera.
  • Smooth iris support with select Canon (2009 and later), Tamron (SP series 2013 and later), and Sigma (2016 and later) lenses.
  • Enables electronic manual focusing on lenses, such as the Canon EF 85mm f/1.2L II, that use a focus-by-wire system.
  • Support for distance and zoom display, auto magnify, and auto APS-C Size Capture settings on select cameras.
  • Internal felt flocking prevents reflections.
  • Removable Arca-type compatible tripod foot with 1/4"-20 thread.
  • Powered by camera body.

Product Specification

Lens Mount Canon EF
Camera Mount Sony E (APS-C)
Magnification 0.71x
Groups/Elements 4/5

Questions & Answers

1 Question

Metabones canon EF sony E-Mount T Speed Booster This is ok for the EF canon to Sony alfha A7R ii camera 1 Answer

Posted on: Thursday, 7 July 2016
Posted by: Jos Meekers

answer this question

1 Answer

Posted on: Thursday, 7 July 2016

Posted by: Steve Gover

The Sony a7rII is a full frame camera so a speed booster will result in vignetting.

You will want the normal version of the Metabones adapter: https://www.proav.co.uk/metabones-canon-ef-to-e-mount-t-iv-black-matt

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