Metabones Minolta MD to Micro FourThirdsSpeed Booster ULTRA 0.71x (Black Matt)

The Metabones Minolta MD to Micro Four Thirds Speed Booster ULTRA 0.71x (Black Matt) converts Minolta MD lenses for use on Micro Four Thirds cameras, increasing lens speed by 1 stop and providing sharper corners, reduced distortion, and minimal vignetting. Its advanced 5-element/4-group optical design makes lenses 0.71x wider, offering exceptional performance for professional-grade zooms and fast prime lenses.

Unlock the full potential of your Minolta MD lenses with the Metabones Minolta MD to Micro Four Thirds Speed Booster ULTRA 0.71x (Black Matt). Designed for Micro Four Thirds cameras, this Speed Booster ULTRA effectively reduces the crop factor, allowing lenses to perform faster and wider. With a 0.71x magnification, APS-C and Micro Four Thirds sensors receive a near full-frame field of view, while lens speed increases by 1 stop—turning, for example, a 50mm f/1.2 lens into a 35.5mm f/0.9 lens with excellent edge-to-edge contrast and resolution.

The adapter incorporates an advanced 5-element/4-group optical design using ultra-high index tantalum-based glass by Caldwell Photographic in the USA, delivering sharper corners, less distortion, and reduced vignetting. Built with precision-machined brass on both camera and lens sides and finished with chromium plating, the adapter ensures a precise fit with no play or wiggling.

A detachable tripod foot provides compatibility with Arca Swiss, Markins, and Photo Clam ball heads, while the Smart AdapterTM series supports electronic aperture control and EXIF data transmission, allowing seamless operation of aperture settings directly from the camera body in P, S, A, or M modes.

This Speed Booster ULTRA maintains infinity focus and correct registration distance for lenses with floating elements or CRC designs, offering uncompromising optical quality for professional filmmakers and photographers.

Key Features

• 0.71x focal reduction for Micro Four Thirds cameras
• Increases maximum aperture by 1 stop
• Advanced 5-element/4-group optical design with ultra-high index tantalum-based glass
• Reduces crop factor and makes lenses 0.71x wider
• Sharper corners, reduced distortion, and minimal vignetting
• Precision-machined brass construction with chromium plating
• Satin surface finish for durability and OEM-like feel
• True electronic aperture control (P, S, A, M modes)
• EXIF data transmission for lens identification, focal length, and aperture
• Detachable Arca-type tripod foot compatible with popular ball heads