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Metabones T CINE Speed Booster ULTRA 0.71x EF to E Mount Adapter MB_SPEF-E-BT3
Metabones T CINE Speed Booster ULTRA 0.71x EF to E Mount Adapter MB_SPEF-E-BT3

Metabones T CINE Speed Booster ULTRA 0.71x EF to E Mount Adapter MB_SPEF-E-BT3

Your Price: $699.00


Metabones Part Number: MB_SPEF-E-BT3


The Metabones T CINE Speed Booster ULTRA 0.71x Adapter for Canon EF Lenses to be used on Sony E-Mount Cameras is the fifth generation of EF to E speed booster from Metabones. It features an advanced 5-element/4-group optical design incorporating a glass element that improves corner sharpness, lessens distortion, and reduces vignetting. This is the first version compatible with the Sony PXW-FS7 Mark II.

The MB_SPEF-E-BT3, like the rest of the Speed Booster ULTRA line, has a magnification of 0.71x &mdash recing the crop factor or mirrorless cameras with DX-sized sensors. This EF to E Adapter also increases the maximum aperture by one stop and features fast contrast-detect AF on all E-Mount cameras.

Structurally, the T CINE Speed Booster ULTRA 0.71x is built with a rubber gasket that protects the mount connection from dust and moisture. Its interior felt material is flocked to reduce internal reflection. The tripod foot is detachable and compatible with Arca Swiss, Markins, and Photo Clam ball heads.

T CINE Speed Booster ULTRA 0.71x Electronic Features:

  • Phase-detect autofocus support on A7RII, A7II, A6300 and A6500.
  • Supports 5-axis in-body image stabilization of A7II, A7RII and A7SII. (Distance information from lens required; 3-axis IBIS if lens does not transmit distance information.)
  • Powered by camera body. No external power source required.
  • Aperture control from camera body.
  • Custom function button assignable to more than 50 functions on A7 series, A6300 and A6500.
  • Dedicated IBIS (in-body image stabilization) switch for A6500, A7II, A7RII and A7SII.
  • LED indicator shows operation mode, OIS (optical image stabilization) activity and communication status.
  • High performance 32-bit processor and efficient switched-mode power supply.
  • Supports image stabilization (IS) lenses.
  • Supports electronic manual focusing (e.g. EF 85/1.2L II and discontinued EF 50/1.0L)
  • EXIF support (focal length, aperture, zoom range)
  • Distance and zoom display on VG and FS series camcorders, A7 series, A6300 and A6500 (lens with distance information support required).
  • Auto "APS-C Size Capture" on full-frame cameras
  • Unfortunately, continuous autofocus and video autofocus are not supported. In fact, AF is disabled with Canon Cinema lenses such as the CN-E 18-80mm T4.4. Also, Sony NEX cameras cannot display aperture values beyond f/1.0; if a f/1.2 Canon EF lens is used with a Speed Booster ULTRA the resulting aperture is f/0.9 but the camera body displays the original aperture f/1.2 to the camera body. i.e, lenses slower than f/1.4 report boosted aperture to camera body; lenses at or faster than f/1.4 report original aperture to camera body (with firmware later than V0.38). This Speed Booster ULTRA is NOT fully compatible with full-frame Sony A7 series. When Speed Booster® ULTRA is used with Sony A7 series, the camera will turn on the "APS-C Size Capture" mode automatically.

    Lens Compatibility Chart: *Lenses marked with an asterisk support smooth iris.

    Fast AF on all E-mount cameras

    Canon EF 8-15mm f/4L USM Fisheye*
    Canon EF 11-24mm f/4L USM
    Canon EF 16-35mm f/2.8L USM
    Canon EF 16-35mm f/4L IS USM
    Canon EF 20-35mm f/3.5-4.5 USM
    Canon EF 24mm f/1.4L USM
    Canon EF 24-105mm f/4L IS USM
    Canon EF 28-80mm f/3.5-5.6 II
    Canon EF 40mm f/2.8 STM*
    Canon EF 50mm f/1.2L USM
    Canon EF 50mm f/1.4 USM
    Canon EF 50mm f/1.8 STM*
    Canon EF 70-200mm f/2.8L IS II USM*
    Canon EF 70-200mm f/4L IS USM
    Canon EF 70-200mm f/4L USM
    Canon EF 70-300mm f/4-5.6L IS USM*
    Canon EF 85mm f/1.2L II USM
    Canon EF 100mm f/2.8L Macro IS USM*
    Canon EF 100-400mm f/4.5-5.6L IS USM
    Canon EF 100-400mm f/4.5-5.6L IS II USM*
    Canon EF 180mm f/3.5L Macro USM
    Canon EF 200mm f/2.8L II USM
    Canon EF 300mm f/4L IS USM
    Canon EF 400mm f/5.6L USM
    Canon EF Extender 1.4x III
    Canon EF Extender 2x II
    Sigma 24-105mm f/4 DG OS Art
    Sigma 50mm f/1.4 DG HSM
    Tamron SP 15-30mm f/2.8 VC USD A012*
    Tamron SP 24-70mm f/2.8 Di VC USD A007
    Tamron SP 45mm f/1.8 Di VC USD F013*
    Tamron SP 70-200mm f/2.8 Di VC USD A009*
    Tamron 70-300mm f/4-5.6
    Tamron SP 90mm f/2.8 Macro
    Tamron 150-600mm f/5-6.3 VC USD A011*

    Tested by the community on A7RII for fast phase-detect AF, thanks!

    Canon EF 14mm f/2.8L II USM
    Canon EF 24-70mm f/4L IS USM
    Canon EF 28-300mm f/3.5-5.6L USM
    Canon EF 35mm f/2L IS USM
    Canon EF 35-350mm f/3.5-5.6L USM
    Canon EF 70-200mm f/2.8L IS USM (Mark I)
    Canon EF 70-200mm f/2.8L USM (non-IS)
    Canon EF 75-300mm f/4-5.6 IS USM
    Canon EF 85mm f/1.8 USM
    Canon EF 400mm f/2.8L IS USM (Mark I)
    Canon EF 400mm f/5.6L USM
    Canon EF 500mm f/4L IS USM (Mark I)
    Sigma 12-24mm f/4.5-5.6 (Ver I)
    Sigma 20mm f/1.4 DG HSM Art
    Sigma 24mm f/1.4 DG HSM Art
    Sigma 35mm f/1.4 DG HSM Art
    Sigma 50mm f/1.4 Art
    Sigma 50-500mm f/4-6.3 OS HSM
    Sigma 70-200mm F2.8 APO EX DG OS HSM
    Sigma 85mm f/1.4 EX DG HSM
    Sigma 150mm f/2.8 Macro
    Sigma 150-600mm f/5-6.3 OS HSM Contemporary

    Phase-detect AF on A6300, A6500, A7II and A7RII only, unable to contrast-detect AF accurately if at all.

    Canon EF 24-70mm f/2.8L II USM
    Canon EF 28-70mm f/3.5-4.5 II
    Canon EF 35mm f/1.4L USM
    Canon EF 50mm f/1.8 II
    Canon EF 100mm f/2.8 Macro USM
    Canon EF 135mm f/2L USM
    Contax N Vario Sonnar 17-35mm f/2.8
    Contax N Planar 50mm f/1.4
    Contax N Vario Sonnar 70-200mm f/3.5-4.5
    Contax N Planar 85mm f/1.4
    1st generation Tamron VC lenses such as Tamron 28-300mm f/3.5-6.3 VC A20 (note 6)

    Manual focus only

    Samyang 35/1.4
    Zeiss CP.2 25mm/T2.9
    Zeiss CP.2 100mm/T2.1
    Zeiss ZE Distagon 15/2.8
    Zeiss ZE Distagon 21/2.8
    Zeiss ZE Distagon 35/2
    Zeiss ZE Makro-Planar 50/2
    Zeiss ZE Makro-Planar 100/2

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