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Metabones T Speed Booster ULTRA 0.71x Adapter for Canon EF Lens to BMPCC 4K Camera

BH #MESPEFM43BT8 • MFR #MBSPEF-M43-BT8
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Metabones T Speed Booster ULTRA 0.71x Adapter for Canon EF Lens to BMPCC 4K Camera
Key Features
  • Canon EF Lens to BMPCC 4K Camera Body
  • Supports In-Camera Aperture Control
  • 0.71x Micro 4/3 Crop Factor Compensation
  • Powered by Camera Body
The T Speed Booster ULTRA 0.71x Adapter for Canon EF Lens to BMPCC 4K from Metabones allows a full-frame Canon EF-mount lens to be mounted onto a Blackmagic Design Pocket Cinema Camera 4K MFT-mount camera. While doing so, the adapter's optics help to maximize the connected lens's apparent angle of view while providing a 1-stop increase for the camera over the lens's aperture range. This 0.71x adapter features Cinema EOS lens support for auto iris and servo zoom, and it also includes AF (autofocus) support which requires external 5V power via the micro-USB port.
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Metabones MBSPEF-M43-BT8 Overview

The T Speed Booster ULTRA 0.71x Adapter for Canon EF Lens to BMPCC 4K from Metabones allows a full-frame Canon EF-mount lens to be mounted onto a Blackmagic Design Pocket Cinema Camera 4K MFT-mount camera. While doing so, the adapter's optics help to maximize the connected lens's apparent angle of view while providing a 1-stop increase for the camera over the lens's aperture range. This 0.71x adapter features Cinema EOS lens support for auto iris and servo zoom, and it also includes AF (autofocus) support which requires external 5V power via the micro-USB port.

If a lens intended for 35mm film or similarly sized full-frame camera sensors is connected to a camera with a Micro Four Thirds-sized sensor, it would project an image larger than the Micro Four Thirds sensor was built to accept. Able to capture only the center portion of the projected image, the effective angle of view of the lens would be narrowed, creating an in-camera "crop factor." The T Speed Booster ULTRA 0.71x adapter condenses the light from a lens designed for 35mm film or "full-frame" camera sensors and projects it onto a Micro Four Thirds sensor. This allows the Blackmagic Pocket Cinema Camera 4K with a Micro Four Thirds sensor to utilize more of the light gathered by a connected lens, which effectively reduces the crop factor while making available to the sensor an additional 1-stop of light for each of the lens's f/stop settings.

This adapter is constructed from aluminum for durability while minimizing weight and its mounting rings are made with brass to further prevent wear and tear. The internal lens elements are designed to provide optical clarity as well as color fidelity, and a detachable tripod foot is included and features 1/4"-20 threads as well as compatibility with Arca-Swiss tripod heads.

The T Speed Booster ULTRA 0.71x adapter supports electronic communication between an attached camera and lens. If the lens includes autofocus, image stabilization, and camera-controlled aperture functions, this adapter is intended to allow those features to be used. Also, if an attached lens is capable of generating EXIF metadata when used with a directly compatible camera, the T Speed Booster ULTRA 0.71x adapter is designed to allow that information to be saved along with image files generated with a combination of the lens, a BMPCC 4K camera, and the adapter.

Key Features
  • Allows a full-frame Canon EF-mount lens to be used with a Blackmagic Design Pocket Cinema Camera 4K MFT-mount camera
  • Maximizes apparent angle of view of combined camera and lens
  • Cinema EOS lens support, including AF (requires external 5V power via micro-USB port), auto iris, and servo zoom
  • Provides a 1-stop increase for the camera over the lens's aperture range
  • Integrated jog dial for incremental aperture adjustment and push-button access to lens's widest aperture setting when used with a compatible Panasonic camera
  • 6 lens elements in 4 groups for optical clarity as well as color fidelity
  • Supports electronic communication between camera and lens to enable autofocus, image stabilization, on-camera aperture control, and EXIF metadata generation when possible
  • Internal coating minimizes reflections within the adapter barrel
  • Detachable, Arca-Swiss compatible tripod foot with 1/4"-20 threads matches the BMPCC 4K camera height
  • Aluminum components for weight reduction
  • Brass mounting rings prevent wear and tear
  • Locking mechanism for secure attachment of lens with push-button release
Camera Compatibility
Blackmagic Pocket Cinema Camera 4K
Blackmagic Pocket Cinema Camera HD (original version)
Blackmagic Micro Cinema Camera
Blackmagic Micro Studio Camera 4K
Blackmagic Studio Camera 4K
Blackmagic Studio Camera
Lens Compatibility
Canon EF 100-400mm f/4.5-5.6L IS II USM
Canon EF 100-400mm f/4.5-5.6L IS USM (I)
Canon EF 100mm f/2.8L IS USM Macro
Canon EF 135mm f/2L USM
Canon EF 16-35mm f/2.8L II USM
Canon EF 17-35mm f/2.8L USM
Canon EF 17-40mm f/4L USM
Canon EF 200mm f/2.8L II USM
Canon EF 24-105mm f/4L IS USM (I)
Canon EF 24-70mm f/2.8L II USM
Canon EF 28-135mm f/3.5-5.6 IS USM
Canon EF 28-70mm f/3.5-4.5 II
Canon EF 28-80mm f/3.5-5.6 III USM
Canon EF 300mm f/2.8L IS II USM
Canon EF 300mm f/4L IS USM
Canon EF 400mm f/5.6L USM
Canon EF 40mm f/2.8 STM
Canon EF 50mm f/1.2L USM
Canon EF 50mm f/1.4 USM
Canon EF 50mm f/1.8 II
Canon EF 50mm f/1.8 STM
Canon EF 70-200mm f/2.8L IS II USM
Canon EF 70-200mm f/4L IS II USM
Canon EF 70-200mm f/4L USM
Canon EF 70-300mm f/4-5.6L IS USM
Canon EF 8-15mm f/4L USM Fisheye
Canon EF 85mm f/1.2L II USM
Sigma 135mm f/1.8 DG HSM Art 017
Sigma 24-105mm f/4 DG HSM Art 013
Sigma 24-35mm f/2 DG HSM Art 015
Sigma 30mm f/1.4 DC HSM Art 013
Sigma 35mm f/1.4 DG HSM Art 012
Sigma 50-500mm f/4.5-6.3 DG OS HSM
Sigma 50mm f/1.4 DG HSM (not Art)
Tamron 10-24mm f/3.5-4.5 VC HLD B023
Tamron 18-250mm f/3.5-6.3 A18
Tamron 18-270mm f/3.5-6.3 B003
Tamron 24-70mm f/2.8 VC USD A007 (G1)
Tamron 28-300mm f/3.5-6.3 A06
Tamron 35-150mm f/2.8-4 VC OSD A043
Tamron 70-200mm F/2.8 Di VC USD A009
Tokina 11-16mm f/2.8 AT-X PRO (I)
Zeiss 18mm f/3.5 ZE
Canon EF-Extender (Teleconverter)

Metabones MBSPEF-M43-BT8Specs

Camera Mount
Micro Four Thirds
Lens Mount
Canon EF
Electronic Communication
Yes
Tripod Mounting Thread
1/4"-20 Female
Material
Brass, Aluminum
Dimensions
H: 2.8D: 1.8" / H: 70.0D: 45.0 mm
Weight
10.58 oz / 300 g
Packaging Info
Package Weight
0.775 lb
Box Dimensions (LxWxH)
4.95 x 4.6 x 2.3"

Metabones MBSPEF-M43-BT8 Reviews

See any errors on this page? Let us know

So no crop factor on full frame lenses for the ...

So no crop factor on full frame lenses for the BMPCC4K or am I just understanding that wrong?
Asked by: Levi
On Aps-c sensor I don't believe you will have any crop. However, in full frame you will. But there are so many advantages. I love my speed booster! Check out this video. It will pretty much answer your questions. https://youtu.be/aPIoVuerdcM
Answered by: Anonymous
Date published: 2019-11-25

Will this speed booster work with the Tamron ...

Will this speed booster work with the Tamron 18-400 for Canon APSC mount?
Asked by: Jama
Yes, this should work fine with that lens.
Answered by: Joe P
Date published: 2020-10-18

Will this new SB accept canon efs lens?

Will this new SB accept canon efs lens?
Asked by: ry
The previous answer isn't really correct. The problem with EF-S lenses is physical incompatibility of the mount rather than anything with sensor coverage. Canon, for some reason, decided to make the mounts physically different to stop people from putting APS-C lenses on full frame cameras, while everyone else just wrote software to switch full frame cameras into sensor crop mode with the smaller format lenses attached. Because of factors surrounding patent expiration, this adapter uses the older full-frame EF mount and won't accept unmodified EF-S lenses. Third party APS-C lenses generally use the EF mount for the same reason and a number of them are on the tested supported list for this adapter. Metabones recommends using the 0.71x speed booster these EF mount APS-C lenses, while the 0.64x version only supports full frame lenses. Technical details: A standard m43 sensor is actually about 0.8x the diagonal of Canon's APS-C, but the imaging circle of an APS-C lens is sufficiently larger than the Canon sensor that there's plenty of margin. This is especially true since we're talking about third-party APS-C lenses, which are typically also available for other camera makes that have settled on larger APS-C sensors. Additional sidenote: There's always an exception to the rule. Despite not covering a full frame, Canon uses the EF mount on their CN-E cinema lenses.
Answered by: Paul
Date published: 2023-06-27

Will I be able to adjust the aperture with this ...

Will I be able to adjust the aperture with this adapter on the BMCP 4K?
Asked by: Under The Radar
If it's an electronic smart EF lens yes.
Answered by: Jannis
Date published: 2022-10-19

What would the crop factor be on the BMPCC 4K ...

What would the crop factor be on the BMPCC 4K when paired with the Metabones Speed Booster ULTRA 0.71x?
Asked by: Yossi
The Pocket 4K has a 1.9x crop factor and this makes a lens 0.71x wider. If you have a 24mm full frame lens you would follow this formula: 24 x 0.71 = 17 x 1.9 = 32.3. So instead of a 24mm being around a 45mm on the Pocket 4K, it is now around a 32mm.
Answered by: Joe P
Date published: 2020-10-27

Whats the difference between this and simpler USD ...

Whats the difference between this and simpler USD 80 Viltrox non speedbooster? Other than the extra stop of light, is it sharper? Does it have less glow/ghosting when pointing to lights? Thanks!
Asked by: Rodrigo
As per manufacturer product description: The T Speed Booster ULTRA 0.71x adapter supports electronic communication between an attached camera and lens. If the lens includes autofocus, image stabilization, and camera-controlled aperture functions, this adapter is intended to allow those features to be used. Also, if an attached lens is capable of generating EXIF metadata when used with a directly compatible camera, the T Speed Booster ULTRA 0.71x adapter is designed to allow that information to be saved along with image files generated with a combination of the lens, a BMPCC 4K camera, and the adapter. The overall results are going to be very noticeable as well.
Answered by: Bruno
Date published: 2020-11-06

If I use this to adapt to a BMPCC 4K does the ...

If I use this to adapt to a BMPCC 4K does the lens’ image stabilization still work?
Asked by: Kevin
Yes. It works with my Canon EF lens.
Answered by: Ricky
Date published: 2020-03-27

Is this SB compatible with any other m43 camera, ...

Is this SB compatible with any other m43 camera, like the Panasonic GH5?
Asked by: Bruno
It is not. This is specifically designed for the Pocket Cinema Camera 4K.
Answered by: Joe P
Date published: 2021-01-13
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