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Metabones EF - MFT T Smart Adapter (MB_EF-M43-BT2)
Features and Benefits:
- Autofocus
- Can be powered either by camera body or by third-party external 5V power source (not included)
- Iris/aperture controlled by the camera body
- Image stabilization (IS) lens support
- Electronic manual focusing (e.g. EF 85/1.2L II and discontinued EF 50/1.0L)
- EXIF (focal length, aperture, zoom range)
- Distance and zoom display on camcorders (requires lenses supporting distance information)
Other:
- Detachable tripod foot compatible with Arca Swiss, Markins and Photo Clam ball heads
- Flocking material coating inside the opening to reduce internal reflection
- Compatible with all MFT mount cameras, including GH4, OM-D, Blackmagic Cinema Camera, Blackmagic Pocket Cinema Camera and JVC GY-LS300
- Supports EF-S lenses
Limitations:
- No video AF for Olympus
- AFC (continuous AF) and AFF (flexible AF) modes are not supported
- Panasonic video AF may hunt more than a native lens or have unsatisfactory performance
- EF-mount lenses are not silent but may make audible click noises during autofocus operation and iris changes which may be picked up by the built-in microphone of the camera. An external microphone is recommended for video.
- Iris changes are unsmooth but in 1/8 stop steps which may be noticeable in video recordings. Programmed exposure mode and shutter priority exposure mode should not be used for video
- No support for in-camera correction such as peripheral shading, CA and distortion
Autofocus with an Optimum Balance of Accuracy, Speed, Consistency and Reliability
Autofocus is supported subject to certain limitations (see table below for details). We are pleased to report that Panasonic Micro Four Thirds camera bodies are capable of autofocusing fast (large maximum aperture) lenses accurately. Although our first and foremost priority is accuracy, we are able to make great strides in autofocus speed as well.
Autofocus Lens Compatibility List
The following table lists lenses which has been tested. Other lenses not listed here typically works well, too.
Accurate:
- Canon EF 8-15mm f/4L USM Fisheye
- Canon EF-S17-55mm f/2.8 IS USM
- Canon EF-S18-55mm f/3.5-5.6 IS II
- Canon EF 20-35mm f/3.5-4.5 USM
- Canon EF 24-105mm f/4L IS USM
- Canon EF 28-80mm f/3.5-5.6 II
- Canon EF 35-80mm f/4-5.6
- Canon EF 40mm f/2.8 STM
- Canon EF 50mm f/1.2L USM
- Canon EF 50mm f/1.4 USM
- Canon EF 70-200mm f/2.8L IS II 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 IS Macro USM
- Canon EF 100mm f/2.8 Macro 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 Extender 1.4x III
- Canon EF Extender 2x
- 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
Tested by the community, thanks!:
- Canon EF 70-200mm f/2.8L IS USM (Mark I)
- Canon EF 85mm f/1.2L USM (Mark I)
- Canon EF 200mm f/2.0L IS USM
- Canon EF 300mm f/2.8L IS USM (Mark I)
- Canon EF 400/2.8L IS USM (Mark I)
Inaccurate:
- Canon EF 50mm f/1.8 II
- Sigma 50mm f/1.4 EX HSM
- Tamron 28-300mm f/3.5-6.3 XR Di VC A20
Manual focus only:
- Contax N lenses modified by Conurus
- Tamron SP 17-50mm f/2.8 VC B005
- Zeiss ZE lenses
Accurate only on newer cameras such as Panasonic G7 and GX8:
- Canon EF 70-200mm f/4L USM (non-IS)
- Canon EF 135mm f/2L USM
- Canon EF 200mm f/2.8L II USM
- Canon EF 300mm f/4L IS USM
Not supported:
- Focus confirmation "chips"
Manual Focus Lens Compatibility
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.
Focus confirmation "chips" such as Dandelion are incompatible.
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.
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.)
Metabones EF - MFT T Smart Adapter (MB_EF-M43-BT2)
Features and Benefits:
- Autofocus
- Can be powered either by camera body or by third-party external 5V power source (not included)
- Iris/aperture controlled by the camera body
- Image stabilization (IS) lens support
- Electronic manual focusing (e.g. EF 85/1.2L II and discontinued EF 50/1.0L)
- EXIF (focal length, aperture, zoom range)
- Distance and zoom display on camcorders (requires lenses supporting distance information)
Other:
- Detachable tripod foot compatible with Arca Swiss, Markins and Photo Clam ball heads
- Flocking material coating inside the opening to reduce internal reflection
- Compatible with all MFT mount cameras, including GH4, OM-D, Blackmagic Cinema Camera, Blackmagic Pocket Cinema Camera and JVC GY-LS300
- Supports EF-S lenses
Limitations:
- No video AF for Olympus
- AFC (continuous AF) and AFF (flexible AF) modes are not supported
- Panasonic video AF may hunt more than a native lens or have unsatisfactory performance
- EF-mount lenses are not silent but may make audible click noises during autofocus operation and iris changes which may be picked up by the built-in microphone of the camera. An external microphone is recommended for video.
- Iris changes are unsmooth but in 1/8 stop steps which may be noticeable in video recordings. Programmed exposure mode and shutter priority exposure mode should not be used for video
- No support for in-camera correction such as peripheral shading, CA and distortion
Autofocus with an Optimum Balance of Accuracy, Speed, Consistency and Reliability
Autofocus is supported subject to certain limitations (see table below for details). We are pleased to report that Panasonic Micro Four Thirds camera bodies are capable of autofocusing fast (large maximum aperture) lenses accurately. Although our first and foremost priority is accuracy, we are able to make great strides in autofocus speed as well.
Autofocus Lens Compatibility List
The following table lists lenses which has been tested. Other lenses not listed here typically works well, too.
Accurate:
- Canon EF 8-15mm f/4L USM Fisheye
- Canon EF-S17-55mm f/2.8 IS USM
- Canon EF-S18-55mm f/3.5-5.6 IS II
- Canon EF 20-35mm f/3.5-4.5 USM
- Canon EF 24-105mm f/4L IS USM
- Canon EF 28-80mm f/3.5-5.6 II
- Canon EF 35-80mm f/4-5.6
- Canon EF 40mm f/2.8 STM
- Canon EF 50mm f/1.2L USM
- Canon EF 50mm f/1.4 USM
- Canon EF 70-200mm f/2.8L IS II 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 IS Macro USM
- Canon EF 100mm f/2.8 Macro 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 Extender 1.4x III
- Canon EF Extender 2x
- 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
Tested by the community, thanks!:
- Canon EF 70-200mm f/2.8L IS USM (Mark I)
- Canon EF 85mm f/1.2L USM (Mark I)
- Canon EF 200mm f/2.0L IS USM
- Canon EF 300mm f/2.8L IS USM (Mark I)
- Canon EF 400/2.8L IS USM (Mark I)
Inaccurate:
- Canon EF 50mm f/1.8 II
- Sigma 50mm f/1.4 EX HSM
- Tamron 28-300mm f/3.5-6.3 XR Di VC A20
Manual focus only:
- Contax N lenses modified by Conurus
- Tamron SP 17-50mm f/2.8 VC B005
- Zeiss ZE lenses
Accurate only on newer cameras such as Panasonic G7 and GX8:
- Canon EF 70-200mm f/4L USM (non-IS)
- Canon EF 135mm f/2L USM
- Canon EF 200mm f/2.8L II USM
- Canon EF 300mm f/4L IS USM
Not supported:
- Focus confirmation "chips"
Manual Focus Lens Compatibility
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.
Focus confirmation "chips" such as Dandelion are incompatible.
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.
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.)
| Adapter type | pārejas adapteris |
| Adapter is for cameras | micro 4/3 |
| Adapter is for lenses | Canon EF |
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