Metabones Canon EF Lens to BMPCC4K T Speed Booster® XL 0.64x (MB_SPEF-M43-BT9)

Optical

• Canon EF mount lens to Blackmagic Design cameras with M43 mount, specific for BMPCC4K.
• Increase maximum aperture by 1 ¹/₃ stop. (with a maximum output aperture of f/0.80).
• Increase MTF.
• Makes lens 0.64x wider.
• Patented 7-element/4-group optical design by Caldwell Photographic in the USA.

Electronic

• Lens iris/aperture is set by the controls on the camera body.
• Smooth iris support with the latest Canon (2009+), Tamron (SP series 2013+) and Sigma (2016+) lens models.
• Image stabilization (IS) lens support.
• Push autofocus if supported by camera.
• Powered by camera body. With most lenses, no external power source required.

Mechanical

• Flocking to reduce internal reflection.
• Rubber gasket protects M43 mount connection from dust and moisture.
• Aluminum alloy and brass construction with chromium plating.
• Satin surface finish.
• Detachable tripod foot compatible with Arca Swiss Style ball head, such as Markins and Photo Clam or attach to quick release plate by a 1/4"-20 screw. 
• The tripod foot is tailor-made to match the exact height as the BMPCC4K camera body.

In a nutshell, we recommend XL for full-frame lenses and ULTRA for DX/APS-C lenses. For the long story, read our M43 Speed Booster Compatibility Chart.

The BMPCC4K Speed Booster ULTRA 0.71x and XL 0.64x are similar to the standard M43 Speed Booster adapters (MB_SPEF-m43-BT3 and MB_SPEF-m43-BT4) but the optics have been re-designed to optimize for the filter stack thickness of 2.4mm found in Blackmagic cameras rather than the 4mm of a standard Micro Four Thirds.

Metabones Canon EF to BMPCC4K Speed Booster adapters are designed exclusively for Blackmagic Design Pocket Cinema Camera 4K (BMPCC4K). They cannot be attached to any other M43 cameras such as JVC, Olympus or Panasonic cameras.

The BMPCC4K Speed Booster XL 0.64x reduces the crop factor of the BMPCC 4K camera from 2.02x to 1.29x and produces the largest aperture optics currently available, with a maximum output aperture of f/0.8. 

Table of compatibility and resulting crop factors with different SpeedBooster :

Note :

1. This Speed Booster is designed to cover a BMPCC4K image circle which is not big enough to cover a full-size 36mm x 24mm sensor.

2. For use with fast lenses (faster than f/1.4), the pre-boost apertures will be displayed in the camera.

   Slow lenses will report boosted apertures to the camera body but fast lenses will report pre-boost apertures. We won't show f/0.8 with a f/1.2 lens attached, but show f/1.2 instead. 

   Example:

   a) EF 85/1.2L attached, camera display = f/1.2, physical aperture  (lens + Speed Booster combined) = f/0.77.
   b) EF 35/2 attached, camera display = f/1.3, physical aperture (lens + Speed Booster combined) = f/1.3.

3. External 5V power via micro USB port may be required (not included).
4. A third party zoom lens may need to be registered with the Speed Booster/Smart Adapter first in order to detect its maximum aperture. 

5. 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.

6. 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^TM They need to be modified before they can be safely used on Speed Booster^TM 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^TM are not covered by warranty.