Metabones Sony Alpha to E-mount Speed Booster ULTRA 0.71x (Black Matt)

The Metabones Sony Alpha (A-Mount) to E-Mount Speed Booster ULTRA 0.71x (Black Matt) allows Sony/Minolta A-mount lenses to be used on Sony E-mount APS-C cameras while increasing the lens’s maximum aperture by 1 stop and widening the field of view. Engineered with a high-performance 5-element/4-group optical design and a durable brass/aluminum body, this Speed Booster ensures superior optical performance and professional usability.

The Metabones Sony Alpha (A-Mount) to E-Mount Speed Booster ULTRA 0.71x (Black Matt) is designed to optimize the performance of full-frame A-mount lenses on APS-C Sony E-mount cameras. Its advanced optical design—comprising 5 elements in 4 groups using ultra-high index tantalum-based optical glass by Caldwell Photographic—reduces crop factor, enhances resolution (MTF), and provides a one-stop gain in lens aperture, effectively making your lens faster.

The adapter features the industry’s best clickless aperture ring covering an 8-stop range, allowing precise manual aperture control without guesswork. Constructed from aluminum alloy and brass with chromium plating, it is built to withstand professional use, while the satin surface finish matches modern camera aesthetics. Additionally, a detachable Arca-type tripod foot allows secure mounting to various tripod heads, including Arca Swiss, Markins, and Photo Clam, with standard 1/4"-20 compatibility.

Key Features:

• Adapts Sony/Minolta A-Mount lenses to Sony E-Mount APS-C cameras
• 0.71x magnification widens lens field of view
• Increases maximum aperture by 1 stop
• Advanced 5-element/4-group optical design with ultra-high index tantalum-based glass
• Clickless aperture ring with clear 8-stop markings for precise control
• Aluminum alloy and brass construction with chromium plating for durability
• Satin surface finish for professional appearance
• Detachable Arca-type tripod foot compatible with Arca Swiss, Markins, and Photo Clam heads