metabones canon ef to micro four thirds t speed booster ultra 0 71x black matt wts broadcast
span style color 000000 since its inception metabones has been designing and manufacturing lens adapters recognized among professionals and enthusiasts as leaders in design and workmanship br br contrary to the popular trend of other factories using an aluminum ring painted black on the camera body side we instead take no short cut but use precision machined brass with chromium plating on both the camera body and the lens sides of our adapters in order to ensure smooth mounting great appearance and durability the lens side of the adapter features a strong leaf spring structure strengthening the adapter lens connection and ensuring tightness of the lens in order to reduce wear and prevent focus errors and optical alignment issues from appearing br br metabones uses matte black treatment to keep internal reflection to a minimum in order to maintain the maximum optical quality possible with the lens br br all metabones adapters follow this tradition of uncompromising precision robust build quality and outstanding finish our new smart adaptertm series of products add industry leading electronic interfacing technology from canada with true electronic control of the lens aperture directly from the camera body br br br br strong select the correct ef mft speed booster fits for your camera strong br br br img alt src http www metabones com assets a stories compatibilitymtf png style font family arial helvetica sans serif font size 14px font style normal font variant normal font weight normal letter spacing normal line height 19 6px text align justify text indent 0px text transform none white space normal word spacing 0px width 600px background color ffffff br br br strong always enhance and never degrade the performance of the attached master lens strong br br like the ultra series for sony e mount the new speed booster ultra m43 uses an advanced 5 element 4 group optical design incorporating ultra high index tantalum based optical glass however the new design is specifically optimized for the micro four thirds sensor and filter stack and as a result achieves an astonishing level of performance that sets a new standard for focal reducers br br like the revolutionary original metabones speed booster reg announced in january 2013 the speed booster ultra m43 has a magnification of 0 71x and so it effectively reduces the crop factor of mirrorless micro four thirds mount cameras from 2 0x to 1 4x however the new ultra design makes very effective use of exotic materials at the furthest limit of glassmaking technology and as a result is almost perfectly corrected for use with all fullframe slr lenses regardless of aperture the speed booster ultra m43 will also work extremely well with many dx and aps c format lenses provided the image circle of the lens is large enough optical performance of the new speed boosters is so good that the mtf of any lens attached to it will be improved even the latest generation of ultra high performance slr lenses such as the zeiss otus series can be improved by adding a speed booster ultra m43 br br strong autofocus with an optimum balance of accuracy speed consistency and reliability strong br br new in speed booster ultra for canon ef mount to micro four thirds is autofocus support subject to certain limitations see table above for details we are pleased to report that panasonic micro four thirds camera bodies are capable of autofocusing accurately even if the maximum aperture of the speed booster and the lens combined is in the sub f 1 0 range although our first and foremost priority is accuracy we are able to make great strides in autofocus speed as well br br em br br br autofocus lens compatibility list em br br em the following table lists lenses which has been tested other lenses not listed here typically works well too em span br br br br span style font size 12px font style normal font variant normal font weight normal letter spacing normal line height 16 8px text align left text indent 0px text transform none white space normal word spacing 0px display inline important float none background color ffffff font family arial helvetica sans serif color 000000 strong accurate strong br span bull span style color 000000 canon ef 8 15mm f 4l usm fisheye br bull canon ef 20 35mm f 3 5 4 5 usm br bull canon ef 24 105mm f 4l is usm br bull canon ef 28 80mm f 3 5 5 6 ii br bull canon ef 35 80mm f 4 5 6 br bull canon ef 40mm f 2 8 stm br bull canon ef 50mm f 1 2l usm br bull canon ef 50mm f 1 4 usm br bull canon ef 50mm f 1 8 stm br bull canon ef 70 200mm f 2 8l is ii usm br bull canon ef 70 300mm f 4 5 6l is usm br bull canon ef 85mm f 1 2l ii usm br bull canon ef 100mm f 2 8l is macro usm br bull canon ef 100mm f 2 8 macro usm br bull canon ef 100 400mm f 4 5 5 6l is usm br bull canon ef 100 400mm f 4 5 5 6l is ii usm br bull canon ef extender 1 4x iii br bull canon ef extender 2x br bull sigma 18 35mm f 1 8 dc art br bull sigma 18 125mm f 3 8 5 6 dc hsm br bull sigma 24 105mm f 4 art br bull tokina at x pro 11 16mm f 2 8 dxii span br br br strong tested by the community thanks strong br span style color 000000 bull canon ef 70 200mm f 2 8l is usm mark i br bull canon ef 85mm f 1 2l usm mark i br bull canon ef 200mm f 2 0l is usm br bull canon ef 300mm f 2 8l is usm mark i br bull canon ef 400 2 8l is usm mark i br br span table cellspacing 0 cellpadding 3 style border 1px solid cccccc border collapse collapse font family arial helvetica sans serif font size 14px font style normal font variant normal font weight normal letter spacing normal line height 19 6px text align justify text indent 0px text transform none white space normal word spacing 0px background color ffffff tbody tr style border 1px solid cccccc border collapse collapse td style border 1px solid cccccc border collapse collapse font size 9pt vertical align top text align left p style margin 0px padding top 0 5em padding bottom 0 5em span style text decoration underline color 000000 strong inaccurate strong span p td tr tr style border 1px solid cccccc border collapse collapse td style border 1px solid cccccc border collapse collapse font size 9pt vertical align top text align left p style margin 0px padding top 0 5em padding bottom 0 5em span style color 000000 canon ef 50mm f 1 8 ii br sigma 50mm f 1 4 ex hsm br tamron sp 24 70mm f 2 8 di vc usd a007 br tamron 28 300mm f 3 5 6 3 xr di vc a20 br tamron sp 70 200mm f 2 8 di vc usd a009 span p td tr tr style border 1px solid cccccc border collapse collapse td style border 1px solid cccccc border collapse collapse font size 9pt vertical align top text align left p style margin 0px padding top 0 5em padding bottom 0 5em span style text decoration underline color 000000 strong manual focus only strong span p td td style border 1px solid cccccc border collapse collapse font size 9pt vertical align top text align left p style margin 0px padding top 0 5em padding bottom 0 5em span style text decoration underline color 000000 strong not supported strong span p td tr tr style border 1px solid cccccc border collapse collapse td style border 1px solid cccccc border collapse collapse font size 9pt vertical align top text align left p style margin 0px padding top 0 5em padding bottom 0 5em span style color 000000 contax n lenses modified by conurus br tamron sp 17 50mm f 2 8 vc b005 br zeiss ze lenses span p td td style border 1px solid cccccc border collapse collapse font size 9pt vertical align top text align left p style margin 0px padding top 0 5em padding bottom 0 5em span style color 000000 focus confirmation chips span p td tr tbody table br br span style color 000000 strong accurate only on newer cameras such as panasonic g7 and gx8 strong br bull canon ef 70 200mm f 4l usm non is br bull canon ef 135mm f 2l usm br bull canon ef 200mm f 2 8l ii usm br bull canon ef 300mm f 4l is usm br br br strong manual focus lens compatibility strong br br some improperly made m42 screw mount adapters may short the electronic contacts of the speed booster and cause damage to the speed booster and or camera body br br focus confirmation chips such as dandelion are incompatible br br 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 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 br br span h3 style margin 0px padding top 1em font family arial helvetica sans serif font style normal font variant normal letter spacing normal text indent 0px text transform none white space normal word spacing 0px background color ffffff text align justify span style color 000000 strong list of manual focus lenses which require modification to be used on speed booster strong span h3 span style color 000000 span h3 style margin 0px padding top 1em font family arial helvetica sans serif font style normal font variant normal letter spacing normal text indent 0px text transform none white space normal word spacing 0px background color ffffff text align justify span style color 000000 strong strong span h3 span style color 000000 span table style border 1px solid cccccc border collapse collapse font family arial helvetica sans serif font size 14px font style normal font variant normal font weight normal letter spacing normal line height 19 6px text align justify text indent 0px text transform none white space normal word spacing 0px background color ffffff tbody tr style border 1px solid cccccc border collapse collapse td style border 1px solid cccccc border collapse collapse font size 9pt vertical align top text align left width 180px h1 style margin 0px padding top 2px font size 12pt white space nowrap span style color 000000 leica r span h1 p style margin 0px padding top 0 5em padding bottom 0 5em span style color 000000 super elmar r 15mm br elmarit r 28 2 8 br elmarit r 35 2 8 br summicron r 50 2 br nbsp span p td td style border 1px solid cccccc border collapse collapse font size 9pt vertical align top text align left width 179px h1 style margin 0px padding top 2px font size 12pt white space nowrap span style color 000000 nikon f span h1 p style margin 0px padding top 0 5em padding bottom 0 5em span style color 000000 20 2 8 ai s span p td td style border 1px solid cccccc border collapse collapse font size 9pt vertical align top text align left width 179px h1 style margin 0px padding top 2px font size 12pt white space nowrap span style color 000000 olympus om span h1 p style margin 0px padding top 0 5em padding bottom 0 5em span style color 000000 om 18 3 5 br om 21 2 br om 21 3 5 br om 28 2 8 br om 50 1 8 span p td td style border 1px solid cccccc border collapse collapse font size 9pt vertical align top text align left width 179px h1 style margin 0px padding top 2px font size 12pt white space nowrap span style color 000000 pentax k span h1 p style margin 0px padding top 0 5em padding bottom 0 5em span style color 000000 every pentax k mount lens has a protruding fin and an aperture lever it does not fit span p td tr tbody table