Metabones Speed Booster Micro 4/3 XL to CANON EF

Speed Booster XL 0.64x
A new Micro-4/3 Speed Booster mounting adapter designed exclusively for the PANASONIC GH4 and other selected Micro Four Thirds cameras (see camera compatbility table below), with a magnification of 0.64x. The Speed Booster XL 0.64x uses an advanced 6-element optical design to achieve extraordinary optical performance at apertures up to an incredible f/0.80, a new record for Micro Four Thirds format.
The new Speed Booster XL 0.64x reduces the full-frame crop factor of the GH4 PANASONIC from 2.0x to 1.28x, thus effectively transforming these cameras into APS-H format. When using the GH4 in 4k Cinema video mode the horizontal factor full-frame harvest is reduced from 2.34x 1.50x to effectively transform the GH4 into a 4k super-35 cinema camera format. In addition, the speed of any coupled lens is increased by 11/3 stops, with a maximum output aperture of f/0.80 when using an f/1.2 lens. For example, a 50mm f/1.2 becomes a 32mm f/0.80, which is the fastest aperture available for full-size Micro Four Thirds format. (More information can be found in the press release here)
 
Main features
Increase the maximum aperture of 11.3 stops
Increase MTF.
It makes lens 0.64x wider.
Build-in electronics to control the aperture of the lens.
The aperture of the lens is fixed by the controls on the camera body.
Developed by camera body. requires no external power supply.
High-performance 32-bit processor and efficient switched power.
The interior is painted with coating flocking to further reduce internal reflection.
The tripod foot is detachable and compatible with Swiss Ark, Markins and Photo Clam ball joints.
Support PANASONIC GH4, GH3, G3, G5, G6, G10, GF3, GF5, GF6, GX1, OLYMPUS E-PL7, Blackmagic Cinema Camera with Micro Four Thirds Mounting**, Blackmagic Pocket Cinema Camera ***
Optics designed by Caldwell photographic in the USA (patent pending).
 

Description

Compatibility
The Speed Booster XL 0.64x is similar to the 0.64x Blackmagic specific BMCC Speed Booster (MB_SPEF-BMCC-BM1), but has been completely redesigned to meet the following requirements:
 
The working distance has been increased by 1mm to allow use in the PANASONIC GH4 and a number of other Micro Four Thirds cameras without touching the flexible outer shell of the camera's shutter mechanism.
 
The optics have been optimized for a Micro Four Thirds thick standard filter stack of 4 mm instead of the 2.4 mm found in Blackmagic chambers.
 
The diameter of the image circle has been increased to 21.63mm so that the total 17.3mm x 13mm Four Thirds format is covered. This has been achieved by maintaining unusually high image quality over the 17.4mm image circle used by the GH4 PANASONIC in its Cine 4k video mode.
 
Although the Speed Booster XL 0.64x has additional space compared to the 0.64x BMCC Speed Booster, there are still a number of Micro Four Thirds cameras that are not compatible due to mechanical removal issues. This is summarized in the table below, which is a color code for which green means the camera is compatible and red means the camera is not supported.
Keep in mind that many of the Network code cameras actually do the function, but there is minor interference with the protective shutter cover. Although slight contact with the shutter cover seems to have no effect on the operation or cosmetics of the camera or the Speed Booster we cannot support these combinations due to the possible risk of damage.
 

* Not tested
Metabones Speed Booster XL Specifications 0.64x:
Magnification: 0.64x
Crop Factor for the complete Micro Four Thirds format: 1.28x
Gh4 crop factor in Cinema 4K (4096 x 2160) Video mode: 1.5x
Maximum Aperture Output: f/0.80 (with f/1.2 lens attached)
Rectilinear distortion: <0.8%
Lens Elements / Groups: 6/4
Reduction Length: 6.2 mm
Camera Mount: Micro Four Thirds
Format: 17.3 mm (full format Micro Four Thirds) x 13.0 mm
 
Compatible Not supported
The EF Objectives
Image Stabilization (IS) Lenses
Electronic Focus Manual (e.g. EF 85/1.2L II and discontinued EF 50/1.0L)
EXIF (focal length, aperture, zoom range)
The distance and zoom of the screen on camcorders (see note 1)
Contax N mount lenses modified for EF CANON by Conurus (see note 2)
Contax 645 NAM-1 adapter modified for EF CANON by Conurus (see note 2)
SIGMA, TAMRON and TOKINA EF CANON Mount lenses (see note 2)
5 volt external power supply (see note 6)
Autofocus
EF-S objectives (some EF-S objectives may need modifications)
Lens correction, such as peripheral shading, AC and distortion
"Chip" confirmation approach (e.g. dandelion)
M42 screw mount adapters (see note 4)
Stacking no Metabones /no Conurus mounting adapters in part superior (see note 5 and the list of targets requiring modification below.)
Lens: TAMRON SP 17-50mm F / 2.8 XR Di VC II
Note:
Requires support lenses distance information.
A third zoom lens may need to be registered with the Speed Booster/Smart adapter first in order to detect its maximum aperture.
This smart adapter is designed to cover a 17.3mm x 13mm sensor.
Some incorrectly made to M42 screw mount adapters could short-circuit the electronic contacts of the smart adapter and cause damage to the smart adapter and/or camera body.
Many manual focus lenses (e.g. OM 28/2.8, OM 50/1.8, LEICA R 15/3.5) have rear bumps (spikes, levers, other appendages) that would damage the optics and/or housing of the smart adapter. They need to be modified before they can be safely used in Smart Adapter. Check and make sure there are no rear bumps of the lens combination/adapter before using the smart adapter. Scratches and damage caused by rear bumps on Smart Adapter are not covered by the warranty.
For those passive (no electronic pin or no camcorder power supply) MFT camcorders, this Speed Booster adapter can also be powered by third party 5 Volt MicroUSB* external power supply.
*) Third party 5 Volt MicroUSB power supply is not provided in the box. Compatibility of third party power supply cannot be guaranteed.
For use with fast lenses (faster than f/1.8), pre-boost apertures will be displayed on the camera.
Slow lenses will report openings driven to the camera body, but fast lenses will report pre-boost apertures. We will not show f/0.8 (Speed Booster XL max. Racing) with af/1.2 lens mounted, but f/1.2 show instead.
Example:
a) EF 85/1.2L attached, camera screen = f/1.2, physical aperture (lens + Combined Speed Booster) = f/0.8 (Speed Booster XL max. stroke).
b) SIGMA 18-35 /1.8 attached, camera screen = f / 1.0, physical aperture (lens + combined Speed Booster) = f / 1.0.
Select the correct EF-MFT Speed Booster fits for your camera:

List of lenses (have been tested by metabones) with the support of EF-M43 smart adapter. (Objectives, which have been tested with EF-E Smart Adapter may refer to the EF-E Smart Adapter product page.)
CANON EF zooms
CANON 20-35mm3.5-4.5
CANON 28-80mm2.8-4L
CANON 70-200mm2.8L
CANON 24-70mm2.8_II
CANON 24-105mm4_L
CANON 70-200mm4_L
CANON 70-300mm4-5.6L
CANON 70-300mm4-5.6
CANON EF prime
CANON 50mm1.8
CANON 50mm1.4
CANON 85mm 1.2
CANON 100mm 2.8
Other
SIGMA 18-200mm3.5-6.3
35mm2 ZEISS
 
List of manual focus targets that require modification to be used on the smart adapter
Many manual focus lenses have rear bumps (picks, levers, other appendages) that would damage the optics and/or housing of the smart adapter. They need to be modified before they can be safely used in Smart Adapter. Check and make sure there are no rear bumps of the lens combination/adapter before using the smart adapter. Scratches and damage caused by rear bumps or poor quality adapters are not covered by the warranty. The following is an incomplete list of lenses known to be incompatible.
R-LEICA
Super-Elmar-R 15 mm
Elmarit R 28 / 2.8
Elmarit R 35 / 2.8
Summicron R 50/2
NIKON F
20 / 2.8 AI-S
OM OLYMPUS
OM 18 / 3.5
OM 21/2
OM 21 / 3.5
OM 28 / 2.8
OM 50 / 1.8
K-PENTAX
Each lens PENTAX K-mount has a protruding fin and an aperture lever. It doesn't fit.
 
Remark: The receipt of PayPal is the order confirmation. There is no separate email confirmation until shipping takes place.
Disclaimer: We are not authorized, approved or ratified by Micro Four Thirds or CANON.
 

By Metabones®?
Since its inception, Metabones has been designing and manufacturing lens adapters recognized among professionals and amateurs as leaders in design and workmanship.
Against the popular trend of other factories using a black painted aluminum ring on the side of the camera body, we instead take no shortcut brass but precision mechanized use with chrome plating on both the camera body and lens sides of our adapters, in order to ensure a smooth assembly, great appearance and durability. The lens side of the adapter features a strong foil spring structure, strengthening the lens adapter connection and ensuring lens tightness in order to reduce wear and prevent focusing errors and optical alignment issues from appearing.
Metabones uses matte black treatment to avoid internal reflection to a minimum in order to maintain the maximum possible optical quality with the lens.
All Metabone adapters follow this tradition of uncompromising precision, robust build quality and exceptional finish. Our new Intelligent AdapterTM series of products add Canada's industry-leading electronic interface technology, with some electronic lens control' aperture directly from the camera body.
Characteristics
Both the camera side and the adapter lens side are brass, precision machined and chrome plated.
Glossy surface finish - just like its lenses and OEM camera mounts.
Precise fit and solid connection - lens has no play, gap or wiggle when mounted on the adapter and no adjustments are required to fit your lens.
Designed to achieve infinite focus, maintaining the correct register distance required to maintain the optical quality of lenses or lenses with CRC floating elements.
Our intelligent adaptertm series adapters have the following additional features
True electronic integration of aperture diaphragm - let the camera automatically select the aperture in P or S exposure modes, or mark on yourself on the camera body in A or M modes.
EXIF data such as lens identification, focal length and aperture.