title_left:  "Metabones Canon EF to Emount T Speed Booster ULTRA 0.71x"@en 0.71x LN78442 - MB_SPEF-E-BT2 | SCAN UK"@en
description_left: "Metabones Canon EF to Emount T Speed Booster ULTRA 0.71x (Black Matt)    "@en 
title_right:  "Metabones Canon EF Lens to Sony E Mount T Speed Booster ULTRA 0.71x" " Metabones 0.71x | WTS Broadcast
description_right: "Speed Booster ULTRA&nbsp; for E-Mount - Sharper corners, less distortion, reduced vignetting <br />
  <br />
  New optical design:&nbsp; 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.<br />
  <br />
  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.&nbsp; 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.&nbsp; 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. <br />
  <br />
  <br />
  Tested Camera Bodies:<br />
  <br />
  &nbsp;&nbsp;&nbsp; A7SII, A7RII, A7II, A7S, A7R, A7<br />
  &nbsp;&nbsp;&nbsp; A6300, A6000<br />
  &nbsp;&nbsp;&nbsp; PXW-FS5, PXW-FS7, NEX-FS700, NEX-FS100<br />
  &nbsp;&nbsp;&nbsp; NEX-EA50, NEX-VG900, NEX-VG30, NEX-VG20, NEX-VG10<br />
  &nbsp;&nbsp;&nbsp; NEX-7, NEX-6, NEX-5R, NEX-5N, NEX-5, NEX-C3, NEX-3<br />
  <br />
  Lens compatibility chart Phase-detect AF on A7RII and A7II and slow contrast-detect AF on other cameras.<br />
  <br />
  Canon EF 8-15mm f/4L USM Fisheye<br />
  Canon EF 11-24mm f/4L USM<br />
  Canon EF 16-35mm f/2.8L USM<br />
  Canon EF 16-35mm f/4L IS USM<br />
  Canon EF 20-35mm f/3.5-4.5 USM<br />
  Canon EF 24mm f/1.4L USM<br />
  Canon EF 24-70mm f/2.8L II USM<br />
  Canon EF 24-105mm f/4L IS USM<br />
  Canon EF 28-80mm f/3.5-5.6 II<br />
  Canon EF 40mm f/2.8 STM<br />
  Canon EF 50mm f/1.2L USM<br />
  Canon EF 50mm f/1.4 USM<br />
  Canon EF 50mm f/1.8 STM<br />
  Canon EF 50mm f/1.8 II<br />
  Canon EF 70-200mm f/2.8L IS II USM<br />
  Canon EF 70-200mm f/4L IS USM<br />
  Canon EF 70-200mm f/4L USM<br />
  Canon EF 70-300mm f/4-5.6L IS USM<br />
  Canon EF 85mm f/1.2L II USM<br />
  Canon EF 100mm f/2.8L Macro IS USM<br />
  Canon EF 100mm f/2.8 Macro USM<br />
  Canon EF 100-400mm f/4.5-5.6L IS USM<br />
  Canon EF 100-400mm f/4.5-5.6L IS II USM<br />
  Canon EF 135mm f/2L USM<br />
  Canon EF 180mm f/3.5L Macro USM<br />
  Canon EF 200mm f/2.8L II USM<br />
  Canon EF 300mm f/4L IS USM<br />
  Canon EF Extender 1.4x III<br />
  Canon EF Extender 2x II<br />
  Sigma 24-105mm f/4 DG OS Art<br />
  Sigma 50mm f/1.4 DG HSM<br />
  Tamron SP 15-30mm f/2.8<br />
  Tamron SP 24-70mm f/2.8 Di VC USD A007<br />
  Tamron SP 45mm f/1.8 Di VC USD F013<br />
  Tamron SP 70-200mm f/2.8 Di VC USD A009<br />
  Tamron 70-300mm f/4-5.6<br />
  Tamron SP 90mm f/2.8 Macro<br />
  Tamron 150-600mm f/5-6.3<br />
  &nbsp;&nbsp; &nbsp;<br />
  <br />
  Canon EF 14mm f/2.8L II USM<br />
  Canon EF 24-70mm f/2.8L II USM<br />
  Canon EF 24-70mm f/4L IS USM<br />
  Canon EF 28-300mm f/3.5-5.6L USM<br />
  Canon EF 35mm f/2L IS USM<br />
  Canon EF 35-350mm f/3.5-5.6L USM<br />
  Canon EF 70-200mm f/2.8L IS USM (Mark I)<br />
  Canon EF 70-200mm f/2.8L USM (non-IS)<br />
  Canon EF 75-300mm f/4-5.6 IS USM<br />
  Canon EF 85mm f/1.8 USM<br />
  Canon EF 400mm f/2.8L IS USM (Mark I)<br />
  Canon EF 400mm f/5.6L USM<br />
  Canon EF 500mm f/4L IS USM (Mark I)<br />
  Sigma 12-24mm f/4.5-5.6 (Ver I)<br />
  Sigma 20mm f/1.4 DG HSM Art<br />
  Sigma 24mm f/1.4 DG HSM Art<br />
  Sigma 35mm f/1.4 DG HSM Art<br />
  Sigma 50mm f/1.4 Art<br />
  Sigma 50-500mm f/4-6.3 OS HSM<br />
  Sigma 70-200mm F2.8 APO EX DG OS HSM<br />
  Sigma 85mm f/1.4 EX DG HSM<br />
  Sigma 150mm f/2.8 Macro<br />
  Sigma 150-600mm f/5-6.3 OS HSM Contemporary<br />
  Phase-detect AF only, cannot CDAF<br />
  <br />
  Contax N Vario Sonnar 17-35mm f/2.8<br />
  Contax N Planar 50mm f/1.4<br />
  Contax N Vario Sonnar 70-200mm f/3.5-4.5<br />
  Contax N Planar 85mm f/1.4<br />
  1st generation Tamron VC lenses such as Tamron 28-300mm f/3.5-6.3 VC A20<br />
  Manual focus only<br />
  <br />
  Samyang 35/1.4<br />
  Zeiss CP.2 25mm/T2.9<br />
  Zeiss CP.2 100mm/T2.1<br />
  Zeiss ZE Distagon 15/2.8<br />
  Zeiss ZE Distagon 21/2.8<br />
  Zeiss ZE Distagon 35/2<br />
  Zeiss ZE Makro-Planar 50/2<br />
  Zeiss ZE Makro-Planar 100/2<br />
  Not supported<br />
  <br />
  Focus confirmation "chip" (e.g. Dandelion)<br />
  <br />
  &nbsp;&nbsp;&nbsp; Sony NEX cameras cannot display aperture values beyond f/1.0. If a f/1.2 Canon EF lens is used with 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)<br />
  &nbsp;&nbsp;&nbsp; Some improperly-made M42 screw mount adapters may short the electronic contacts of the Speed Booster ULTRA and cause damage to the Speed Booster ULTRA and/or camera body.<br />
  &nbsp;&nbsp;&nbsp; Many manual focus lenses (e.g. OM 28/2.8, OM 50/1.8, Leica R 15/3.5) have rear protrusions (spikes, levers, other appendages) which would damage the optics and/or housing of Speed Booster ULTRA They need to be modified before they can be safely used on Speed Booster Check and make sure there are no rear protrusions from the adapter/lens combination before using on Speed Booster. Scratches and damages caused by rear protrusions on Speed Booster are not covered by warranty.<br />
  &nbsp;&nbsp;&nbsp; This Speed Booster ULTRA is NOT fully compatible with full-frame Sony A7 series. When Speed Booster&reg; ULTRA is used with Sony A7 series, the camera will turn on the "APS-C Size Capture" mode automatically.<br />
  <br />
  List of manual focus lenses which REQUIRE MODIFICATION to be used on Speed Booster ULTRA<br />
  <br />
  Many manual focus lenses have rear protrusions (spikes, levers, other appendages) which would damage the optics and/or housing of Speed Booster ULTRA. They need to be modified before they can be safely used on Speed Booster ULTRA. Check and make sure there are no rear protrusions from the adapter/lens combination before using on Speed Booster ULTRA. Scratches and damages caused by rear protrusions or by poor quality adapters are not covered by warranty. The following is an incomplete list of lenses known to be incompatible.<br />
  Leica R<br />
  Super-Elmar-R 15mm<br />
  Elmarit R 28/2.8<br />
  Elmarit R 35/2.8<br />
  Summicron R 50/2 &nbsp;&nbsp; &nbsp;<br />
  Nikon F<br />
  20/2.8 AI-S &nbsp;&nbsp; &nbsp;<br />
  Olympus OM<br />
  OM 18/3.5<br />
  OM 21/2<br />
  OM 21/3.5<br />
  OM 28/2.8<br />
  OM 50/1.8 &nbsp;&nbsp; &nbsp;<br />
  Pentax K<br />
  <br />
  Every Pentax K-mount lens has a protruding fin and an aperture lever. It does NOT fit.<br />
  &nbsp;<br />" 