Metabones Canon EF to MicroFourThirds T CINE Speed Booster ULTRA 0.71x

The Metabones Canon EF Lens to Micro Four Thirds T CINE Speed Booster ULTRA 0.71x (Fifth Generation) enhances Canon EF-mount lenses for Micro Four Thirds cameras by reducing crop factor, increasing aperture by 1⅓ stops, and supporting autofocus, image stabilization, and smooth iris control. Its positive-lock mount and weather-resistant design ensure secure, reliable use, while advanced optics deliver improved sharpness and wider field of view.

Boost the performance of your Canon EF-mount full-frame or APS-C lenses when using a Micro Four Thirds camera with the Metabones T CINE Speed Booster ULTRA 0.71x (Fifth Generation). This cinema-style electronic adapter features a positive-lock Canon EF lens mount that securely holds your lenses while optics reduce the crop factor from 2x to approximately 1.4x by making the lens 0.71x wider and increasing the maximum aperture by about 1⅓ stops for better low-light performance and depth of field control.

Built with a sophisticated 5-element, 4-group optical design, the Speed Booster ULTRA enhances sharpness and optical performance of your adapted lenses. Its electronic communication enables autofocus, image stabilization, and aperture control directly from the camera body. Smooth iris control is supported on select Canon, Tamron, and Sigma lenses, and electronic manual focus with focus-by-wire lenses like the Canon EF 85mm f/1.2L II is also possible.

Additional features include a weather-resistant rubber gasket on the mount to protect against dust and moisture, internal black felt flocking to prevent reflections, and distance and zoom data transmission for compatible cameras. Cinema EOS lenses are fully supported when powering the adapter through an external 5 VDC micro-USB supply, enabling autofocus, servo zoom, and auto iris functions.

For larger lenses, a detachable Arca-type compatible tripod foot with 1/4"-20 thread offers secure tripod mounting.

Key Features:

• Adapts Canon EF full-frame and APS-C lenses to Micro Four Thirds cameras
• 0.71x optical magnification reduces crop factor from 2x to ~1.4x
• Increases maximum aperture by 1⅓ stops
• 5 elements in 4 groups optical design improves sharpness and reduces distortion
• Positive-lock Canon EF lens mount for secure lens attachment
• Electronic communication supports autofocus, image stabilization, aperture control, and EXIF data transfer
• Smooth iris support on select Canon, Tamron SP series, and Sigma lenses
• Electronic manual focus support for focus-by-wire lenses
• Weather-resistant rubber gasket protects camera mount
• Internal felt flocking minimizes internal reflections
• Supports Cinema EOS lenses with external 5 VDC power via micro-USB
• Distance and zoom data transmission supported
• Detachable Arca-type compatible tripod foot with 1/4"-20 thread