Metabones Canon EF auf MFT T Speed Booster ULTRA 0.71x

748,51 € * mit MwSt.
629,00 € ohne MwSt.

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  • SW15999
Metabones Canon EF auf MFT T ULTRA 0.71x Speed Booster Adapter SKU: MB_SPEF-M43-BT4 The... mehr
Produktinformationen "Metabones Canon EF auf MFT T Speed Booster ULTRA 0.71x"

Metabones Canon EF auf MFT T ULTRA 0.71x Speed Booster Adapter


The new 0.71x Speed Booster Adapter 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. Like the revolutionary original Metabones Speed Booster® 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.

New in Speed Booster ULTRA for Canon EF Mount to Micro Four Thirds is autofocus on Panasonic camera bodies, 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, which is significantly faster than a DSLR Four Thirds lens on a Panasonic Micro Four Thirds camera (with adapter), or our E-mount offerings on Sony cameras prior to Alpha 7R II.


Autofocus Lens Compatibility List

Canon EF20-35mm f/3.5-4.5 USM
Canon EF24-105mm f/4L IS USM
Canon EF35-80mm f/4-5.6
Canon EF40mm f/2.8 STM
Canon EF50mm f/1.2L USM
Canon EF50mm f/1.4 USM
Canon EF70-200mm f/2.8L IS II USM
Canon EF70-300mm f/4-5.6L IS USM
Canon EF85mm f/1.2L II USM
Canon EF100mm f/2.8 USM macro
Sigma 18-35mm f/1.8 DC Art
Sigma 18-125mm f/3.8-5.6 DC HSM
Tamron SP 24-70mm f/2.8 Di VC USD A007
Tamron SP 70-200mm f/2.8 Di VC USD A009
Tokina AT-X PRO 11-16mm f/2.8 DXII
Accurate only on newer cameras such as Panasonic G7
Canon EF70-200mm f/4L USM
Canon EF135mm f/2L USM
Canon EF200mm f/2.8L II USM
Canon EF50mm f/1.8 II
Sigma 50mm f/1.4 EX HSM
Manual focus only
Contax N lenses modified by Conurus
Tamron SP 17-50mm f/2.8 VC B005
Zeiss ZE lenses

List of manual focus lenses which REQUIRE MODIFICATION to be used on Speed Booster

Leica R
Super-Elmar-R 15mm
Elmarit R 28/2.8
Elmarit R 35/2.8
Summicron R 50/2
Nikon F
20/2.8 AI-S
Olympus OM
OM 18/3.5
OM 21/2
OM 21/3.5
OM 28/2.8
OM 50/1.8
Pentax K
Every Pentax K-mount lens has a protruding fin and an aperture lever. It does NOT fit.

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