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Canon EF Lens to MFT T Speed Booster ULTRA 0.71x Mark II

Key Features

Features and Benefits		Limitations
Electronic Compatible with all MFT mount cameras, including G9II, GH7, GH6, GH5, OM-1, OM-D, Blackmagic Cinema Camera, Blackmagic Pocket Cinema Camera and JVC GY-LS300. Autofocus Phase-detection autofocus (PDAF) on supported camera bodies* Iris/aperture controlled by the camera body Smooth iris support with the latest Canon (2009+), Tamron (SP series 2013+) and Sigma (2016+) lenses Image stabilization lens support (Canon IS, Sigma OS, Tamron VC) Support for cameras with in-body image stabilization (IBIS) Electronic manual focusing (e.g. EF 85/1.2L II, EF 50/1.8 STM and discontinued EF 50/1.0L) EXIF (focal length, aperture, zoom range) Distance and zoom display (requires lenses supporting distance information) Cinema EOS lens support (CN-E 18-80mm T4.4 L, CN10x25 25-250mm T2.95, etc.), including AF, auto iris and servo zoom (may require external power) LED indicator shows adapter status. Mechanical The tripod foot is detachable and compatible with Arca Swiss, Markins and Photo Clam ball heads. Flocking to reduce internal reflection. Rubber gasket protects the MFT mount connection from dust and moisture.		AF may not work if the maximum aperture of the lens plus any EF Extender or other teleconverter attached is smaller than f/8. Some older third-party lenses may have unsatisfactory AF accuracy. No support for Focus Stacking and Focus Bracketing. Most 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. Use of Canon Cinema lenses such as CN-E 18-80mm T4.4 L IS KAS S and CN 10x25 25-250mm T2.95 for still photography is not supported. (Functional, but slower than lenses designed for still photography.) Iris changes are 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. This limitation does not apply to Cinema EOS lenses which permit fine resolution iris control, such as CN-E 18-80mm T4.4 L IS KAS S and CN 10x25 25-250mm T2.95. No support for in-camera correction such as peripheral shading, CA and distortion

Features and Benefits

Limitations

Electronic

Compatible with all MFT mount cameras, including G9II, GH7, GH6, GH5, OM-1, OM-D, Blackmagic Cinema Camera, Blackmagic Pocket Cinema Camera and JVC GY-LS300.
Autofocus
Phase-detection autofocus (PDAF) on supported camera bodies*
Iris/aperture controlled by the camera body
Smooth iris support with the latest Canon (2009+), Tamron (SP series 2013+) and Sigma (2016+) lenses
Image stabilization lens support (Canon IS, Sigma OS, Tamron VC)
Support for cameras with in-body image stabilization (IBIS)
Electronic manual focusing (e.g. EF 85/1.2L II, EF 50/1.8 STM and discontinued EF 50/1.0L)
EXIF (focal length, aperture, zoom range)
Distance and zoom display (requires lenses supporting distance information)
Cinema EOS lens support (CN-E 18-80mm T4.4 L, CN10x25 25-250mm T2.95, etc.), including AF, auto iris and servo zoom (may require external power)
LED indicator shows adapter status.

Mechanical

The tripod foot is detachable and compatible with Arca Swiss, Markins and Photo Clam ball heads.
Flocking to reduce internal reflection.
Rubber gasket protects the MFT mount connection from dust and moisture.

AF may not work if the maximum aperture of the lens plus any EF Extender or other teleconverter attached is smaller than f/8.
Some older third-party lenses may have unsatisfactory AF accuracy.
No support for Focus Stacking and Focus Bracketing.
Most 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.
Use of Canon Cinema lenses such as CN-E 18-80mm T4.4 L IS KAS S and CN 10x25 25-250mm T2.95 for still photography is not supported. (Functional, but slower than lenses designed for still photography.)
Iris changes are 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. This limitation does not apply to Cinema EOS lenses which permit fine resolution iris control, such as CN-E 18-80mm T4.4 L IS KAS S and CN 10x25 25-250mm T2.95.
No support for in-camera correction such as peripheral shading, CA and distortion

*If C-AF and C-AF-TR become greyed out on OM System OM-1, try turning on the "Keystone Correction" option on the camera, and then turn it off.

Description

Always Enhance and Never Degrade the Performance of the Attached Master Lens

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.

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. (More information can be found in the press release here and whitepaper here)

Select the correct EF-MFT Speed Booster for your camera

GH7, XL or ULTRA?

In a nutshell, we recommend XL for full frame lenses and ULTRA for DX/APS-C lenses. For the long story, read the 'limitations' column.

Compatible with OM SYSTEM

Our EF-MFT line-up has been refreshed to "Mark II" by redesigning to clear the faux-pentaprism of OM SYSTEM OM-1. For details, as well as additional benefits of "Mark II", read press release.

Product Video

Unsupported Lenses

Incompatible

Tamron 70-300mm F/4-5.6 VC USD A005

No AF Support

Tamron SP 17-50mm F/2.8VC B005
Tamron 28-300mm F/3.5-6.3 VC A20
Tokina Opera 50mm F/1.4
Sigma 18-125mm F/3.5-5.6DC OS HSM

AF may not be accurate, but may be usable on a camera with PDAF (GH7, OM-1. etc.)

Canon EF 50mm f/1.8 II
Canon EF 28-70mm f/3.5-4.5 II
Sigma 50mm f/1.4 EX HSM
Sigma 90mm F/2.8 macro (1988)
Tamron 18-250mm f/3.5-6.3 Di II Macro A18
Tamron 18-270mm F/3.5-6.3 VC PZD B008
Tamron 24-70mm f/2.8 VC USD A007
Tamron 28-300mm f/3.5-6.3 XR Di Macro A06
Tokina AT-X PRO 11-16mm f/2.8 DX (I)

Incompatible EF-S lens (insufficient clearance, even if modified)

Canon EF-S 10-18mm f4.5-5.6 IS STM
Canon EF-S 17-55mm f/2.8 IS USM
Canon EF-S 18-55mm f/3.5-5.6 IS II
Canon EF-S 18-135mm f/3.5-5.6 IS USM "Nano"

Unsupported List

Canon EF-S Lens (but third-party APS-C lenses are supported)
Panasonic and Olympus/OM Tele-converter
Lens correction such as peripheral shading, CA and distortion
Focus confirmation "chip" (e.g. Dandelion)
M42 screw mount adapters _{(see "Manual Focus Lens Compatibility" below)}
Stacking non-Metabones/non-Conurus mount adapters on top _{(see "Manual Focus Lens Compatibility" and list of lenses which require modification below.)}

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.

Remark: Your PayPal receipt is your order confirmation. There is no separate email confirmation until shipment takes place.

Disclaimer: we are NOT licensed, approved or endorsed by Micro Four Thirds or Canon.

Mark II Technology

Mark II Technology works by having additional data tailored for your lens, resulting in the highest performance possible with a lens mount adapter. Lens profile data of the following lenses are stored in your Speed Booster or Smart Adapter. The LED turns pink to indicate that a matching lens profile is found and Mark II technology is operational.

Canon EF-S10-18mm f4.5-5.6 IS STM
Canon EF-S10-22mm f3.5-4.5 USM
Canon EF-S15-85mm f3.5-5.6 IS USM
Canon EF-S17-55mm f2.8 IS USM
Canon EF-S17-85mm f4-5.6 IS USM
Canon EF-S18-55mm f3.5-5.6
Canon EF-S18-135mm f3.5-5.6 IS
Canon EF-S18-135mm f3.5-5.6 IS STM
Canon EF-S18-200mm f3.5-5.6 IS
Canon EF-S24mm f2.8 STM
Canon EF-S35mm f2.8 Macro IS STM
Canon EF-S55-250mm f4-5.6 IS
Canon EF-S55-250mm f4-5.6 IS STM
Canon EF-S60mm f2.8 Macro USM
Canon EF8-15mm f4L Fisheye USM
Canon EF16-35mm f2.8L USM
Canon EF16-35mm f2.8L II USM
Canon EF16-35mm f2.8L III USM
Canon EF16-35mm f4L IS USM
Canon EF17-35mm f2.8L USM
Canon EF17-40mm f4L USM
Canon EF20-35mm f2.8L
Canon EF20-35mm f3.5-4.5 USM
Canon EF24-70mm f2.8L USM
Canon EF24-70mm f2.8L II USM
Canon EF24-85mm f3.5-4.5 USM
Canon EF24-105mm F4L IS USM
Canon EF24-105mm f4L IS II USM
Canon EF28-70mm f3.5-4.5 II
Canon EF28-80mm f3.5-5.6 II
Canon EF28-90mm f4-5.6 II USM
Canon EF28-105mm f3.5-4.5 USM
Canon EF28-105mm f3.5-4.5 II USM
Canon EF28-105mm f4-5.6 USM
Canon EF28-135mm f3.5-5.6 IS USM
Canon EF28-200mm f3.5-5.6 USM
Canon EF35-70mm f3.5-4.5
Canon EF35-80mm f4-5.6 III
Canon EF35-135mm f3.5-4.5
Canon EF35-135mm f4-5.6 USM
Canon EF35-350mm f3.5-5.6L USM
Canon EF35mm f1.4L USM
Canon EF35mm f2
Canon EF40mm f2.8 STM
Canon EF50mm F1.4 USM
Canon EF50mm f1.8
Canon EF50mm f2.5 Compact Macro
Canon EF55-200mm f4.5-5.6 USM
Canon EF70-200mm f2.8L USM
Canon EF70-200mm f2.8L IS II USM
Canon EF70-200mm f4L USM
Canon EF70-200mm f4L IS USM
Canon EF70-300mm f4-5.6 IS USM
Canon EF70-300mm f4-5.6 IS II USM
Canon EF70-300mm f4-5.6L IS USM
Canon EF100-300mm f4.5-5.6 USM
Canon EF100-300mm f5.6
Canon EF100-400mm f4.5-5.6L IS USM
Canon EF100-400mm f4.5-5.6L IS II USM
Canon EF100mm f2.8 Macro
Canon EF100mm f2.8L Macro IS USM
Canon EF135mm f2L USM
Canon EF180mm f3.5L Macro USM
Canon EF200mm f1.8L USM
Canon EF200mm f2.8L II USM
Canon EF300mm f2.8L USM
Canon EF Extender 1.4x I/II/III
Canon EF Extender 2x I/II/III
Samyang AF 85mm F1.4
Sigma 10-20mm F3.5 EX DC HSM
Sigma 12-24mm F4.5-5.6 EX DG Ashperical HSM
Sigma 17-70mm F2.8-4 DC Macro OS HSM
Sigma 17-70mm F2.8-4 DC Macro OS HSM Contemporary
Sigma 18-50mm F2.8-4.5 DC OS HSM
Sigma 18-125mm F3.5-5.6 DC
Sigma 18-200mm F3.5-6.3 DC
Sigma 18-250mm F3.5-6.3 DC Macro OS HSM
Sigma 20mm F1.4 DG HSM Art
Sigma 24-70mm F2.8 DG OS HSM Art
Sigma 24mm F1.4 DG HSM Art
Sigma 24mm F1.8 EX DG Aspherical Macro
Sigma 28-80mm F3.5-5.6 Aspherical Macro HF
Sigma 28mm F1.4 DG HSM Art
Sigma 28mm F1.8 EX DG Aspherical Macro
Sigma 30mm F1.4 DC HSM Art
Sigma 35mm F1.4 DG HSM Art
Sigma 50-200mm F4-5.6 DC OS HSM
Sigma 50mm F1.4 DG HSM Art
Sigma 60-600mm F4.5-6.3 DG OS HSM Sport
Sigma 70-300mm F4-5.6 DG OS
Sigma 70mm F2.8 DG Macro Art
Sigma 85mm F1.4 DG HSM Art
Sigma 85mm F1.4 EX DG HSM
Sigma 100-400mm F5-6.3 DG OS HSM Contemporary
Sigma 105mm F1.4 DG HSM Art
Sigma 150-600mm F5-6.3 DG OS HSM Contemporary
Sigma 150-600mm F5-6.3 DG OS HSM Sport
Sigma APO 50-500mm F4-6.3 EX DG HSM
Sigma APO 50-500mm F4.5-6.3 DG OS HSM
Sigma APO 135-400mm F4.5-5.6 RF ZEN
Sigma APO 300-800mm F5.6 EX DG HSM
Sigma APO 70-210mm F2.8
Sigma Macro 70mm F2.8 EX DG
Sigma Macro 90mm F2.8
Sigma Macro 105mm F2.8 EX DG OS HSM
Tamron 18-200mm F/3.5-6.3 Di II VC
Tamron 18-400mm F/3.5-6.3 Di II VC HLD
Tamron 28-300mm F3.5-6.3 Di VC PZD
Tamron AF 28-200mm F3.8-5.6 Aspherical 71D
Tamron AF 28-300mm F3.5-6.3 XR Di LD Aspherical [IF] Macro A061
Tamron SP 24-70mm F/2.8 Di VC USD
Tamron SP 70-200mm F/2.8 Di VC USD
Tamron SP 70-300mm F/4-5.6 Di VC USD
Tamron SP 90mm F/2.8 Di Macro VC USD
Tamron SP 150-600mm F/5-6.3 Di VC USD
Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical [IF] A16
Tamron SP AF 180mm F3.5 Di LD [IF] Macro B01
Tamron SP AF 200-500mm F5.0-6.3 Di LD [IF] A08
Tamron SP AF28-75mm F/2.8 XR Di LD Aspherical A09
Tamron SP AF60mm F/2 Di II LD [IF] Macro
Tamron SP AF70-200mm F2.8 Di

Why Metabones®?

Since its inception, Metabones has been designing and manufacturing lens adapters recognized among professionals and enthusiasts as leaders in design and workmanship.

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.

Metabones uses matte-black treatment to keep internal reflection to a minimum in order to maintain the maximum optical quality possible with the lens.

All Metabones Adapters follow this tradition of uncompromising precision, robust build quality and outstanding finish. Our new Smart Adapter^TM series of products add industry-leading electronic interfacing technology from Canada, with true electronic control of the lens' aperture directly from the camera body.

Features

Both camera-side and lens-side of the adapter are made of brass, precision-machined and plated with chromium.
Satin surface finish - just like your OEM lens and camera mounts.
Precise fit and solid connection - lens has no play, gap or wiggling when mounted on adapter and no adjustments are required to fit your lens.
Designed to reach infinity focus while maintaining the correct registration distance required to maintain optical quality of CRC lenses or lenses with floating elements.

Our Smart Adapter^TM series adapters have the following additional features

True electronic integration of aperture diaphragm - let camera automatically choose aperture in P or S exposure modes, or dial in yourself on the camera body in A or M modes.
EXIF data such as lens identification, focal length and aperture.