Metabones Canon EF - E-Mount T Speed Booster ULTRA 0.71x (Mark II)

  • Metabones Canon EF - E-Mount T Speed Booster ULTRA 0.71x (Mark II) - 1
  • Metabones Canon EF - E-Mount T Speed Booster ULTRA 0.71x (Mark II) - 2
  • Metabones Canon EF - E-Mount T Speed Booster ULTRA 0.71x (Mark II) - 3
  • Metabones Canon EF - E-Mount T Speed Booster ULTRA 0.71x (Mark II) - 4
Metabones Canon EF - E-Mount T Speed Booster ULTRA 0.71x (Mark II)
  • Lens Mount Adapter Canon EF Lens to Sony NEX (E-Mount) T, Speed Booster ULTRA 0.71x, Mark II, e.g. for Sony NEX-FS700, PXW-FS5, PXW-FS7 II 

    Sharper corners, less distortion, reduced vignetting

    New optical design: Advanced 5-element/4-group optical design incorporating ultra-high index tanatalum-based optical glass to achieve extraordinary optical performance with improved corner sharpness, distortion and reduced vignetting.

    Like the revolutionary original Metabones Speed Booster announced in January 2013, the Speed Booster ULTRA has a magnification of 0.71x, and so it effectively reduces the crop factor of mirrorless cameras with DX-sized sensors, such as Sony E-mount and Fuji X-mount cameras, from 1.5x to 1.07x.

    However, the new ULTRA design makes very effective use of exotic materials at the furthest limit of glassmaking technology, and as a result is well corrected for use with virtually all fullframe SLR lenses regardless of exit pupil distance.

    Thus, the Speed Booster ULTRA performs extremely well with professional-grade f/2.8 zoom lenses such as the 24-70mm f/2.8 and 70-200mm f/2.8 zooms by Canon and Nikon to produce 17-50mm f/2.0 and 50-142mm f/2.0 high-speed zooms, respectively.

    Similarly, high-speed fixed focal length lenses such as a 50mm f/1.2 will be transformed into a 35.5mm f/0.9 lens with excellent contrast and resolution from the center all the way to the edges of the image.


    Metabones Exclusive

    • Advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass by Caldwell Photographic in the USA (patent pending).
    • AF-C tracking during high speed drive at up to 10fps on Sony A9.
    • If both your lens supports optical image stabilization (OIS) and your camera supports sensor-shift, in-body image stabilization (IBIS), the choice is yours on which one to use, or have both of them work in harmony.
    • Smooth iris support with the latest Canon (2009+), Tamron (SP series 2013+) and Sigma (2016+) lenses.
    • Custom function button (called Focus Hold button) assignable to more than 50 functions, such as Aperture Preview and Eye-AF, on A9, A7 series, A6500 and A6300.
    • Dedicated switch controls in-body image stabilization (IBIS) on Sony cameras eqipped with SteadyShot INSIDE.
    • Compatible with Sony FS7 Mark II camera.
    • Cinema EOS lens (CN-E) support, including power zoom, AF and auto iris.
    • Rubber gasket protects E-mount connection from dust and moisture.
    • Detachable tripod foot, compatible with Arca Swiss, Markins and Photo Clam ball heads.


    • Increase maximum aperture by 1 stop.
    • Increase MTF.
    • Makes lens 0.71x wider.
    • Felt material flocked inside to reduce internal reflection.


    • Fast contrast-detection AF on all E-mount cameras (except AF-S/DMF with Sony A9).
    • Pure phase-detection autofocus support on A9, A7RII, A7II, A6500 and A6300 (the fastest).
    • 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.
    • LED indicator shows operation mode, OIS (optical image stabilization) activity and communication status.
    • 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, lens name)
    • Distance and zoom display on VG and FS series camcorders, A9, A7 series, A6500 and A6300 (lens with distance information support required).
    • Auto magnify (lens with distance information support required)
    • Auto "APS-C Size Capture" on full-frame cameras.
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