Metabones Canon EF to MicroFourThirds T CINE Speed Booster XL 0.64x

Speed Booster XL 0.64x

The Speed Booster XL 0.64x is similar to the Blackmagic-specific 0.64x BMCC Speed Booster (MB_SPEF-BMCC-BM1), but has been completely re-designed to meet the following requirements:

• The working distance has increased by 1mm to permit use on the Panasonic GH4 and a number of other Micro Four Thirds cameras without touching the flexible outer cover of the camera’s shutter mechanism.
• The optics are optimized for a standard Micro Four Thirds filter stack thickness of 4mm rather than the 2.4mm found in Blackmagic cameras.
• The image circle diameter has been increased to 21.63mm so that the full 17.3mm x 13mm Four Thirds format is covered.  This has been achieved while maintaining unusually high image quality over the 17.4mm image circle used by the Panasonic GH4 in its Cinema 4k video mode.

Although the Speed Booster XL 0.64x has extra clearance compared to the 0.64x BMCC Speed Booster, there are still a number of Micro Four Thirds cameras that are not supported due to mechanical clearance issues.  This is summarized in the table below, which is color-coded so that Green means the camera is supported and Red means the camera is not supported. 

Note that many of the Red-coded cameras actually do function, but there is a minor interference with the protective shutter cover.  Although slight contact with the shutter cover appears to have no effect on the functioning or cosmetics of either the camera or the Speed Booster we cannot support these combinations due to possible risk of damage.

Key Features:

    Optical

•  Increase maximum aperture by 11/3 stop
•  Increase MTF
•  Makes lens 0.64x wider
•  Patented 6-element/4-group optical design by Caldwell Photographic in the USA
•  Supports 4k video mode with DX lenses (except on GH5).

    Electronic

•  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
•  Smooth iris support with the latest Canon (2009+), Tamron (SP series 2013+) and Sigma (2016+) lenses
•  Image stabilization (IS) lens support
•  Support for cameras with in-body image stabilization (IBIS), including Panasonic GX7, GX8, GX80/85 and Olympus cameras
•  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)
•  Cinema EOS lens support (CN-E 18-80mm T4.4 L), including AF (requires external 5V power through micro USB port), auto iris and servo zoom

    Other

•  New positive-lock EF lens mount. 
•  Detachable tripod foot compatible with Arca Swiss, Markins and Photo Clam ball heads.
•  Rubber gasket protects MTF mount connection from dust and moisture.
•  The opening is flocked with felt material to reduce internal reflection.