Metabones ROLLEI QBM to E-mount Speed Booster ULTRA 0.71x (Black Matt)

The Metabones Rollei QBM to Sony E-mount Speed Booster ULTRA 0.71x (Black Matt) allows Rollei QBM lenses to be used on Sony E-mount cameras while increasing maximum aperture by 1 stop and widening the field of view. Featuring an advanced 5-element/4-group optical design and detachable tripod foot, it delivers sharper corners, reduced distortion, and high-speed performance for both zoom and prime lenses.

The Metabones Rollei QBM to Sony E-mount Speed Booster ULTRA 0.71x (Black Matt) is a professional-grade lens adapter designed to enhance the performance of Rollei QBM lenses on Sony E-mount cameras. With its revolutionary 0.71x magnification, the adapter effectively reduces the crop factor on DX-sized mirrorless cameras, producing a wider field of view and brighter images by increasing the maximum aperture by 1 stop.

The optical system features a 5-element/4-group design incorporating ultra-high index tantalum-based optical glass developed by Caldwell Photographic in the USA. This advanced construction minimizes distortion, improves corner sharpness, and reduces vignetting, allowing lenses to perform like high-speed optics even at wide apertures. For example, professional f/2.8 zooms can perform like f/2.0 lenses, and a 50mm f/1.2 prime can achieve an effective f/0.9 aperture.

Durability and precision are ensured with aluminum alloy and brass construction, a satin black matte finish, and a detachable tripod foot compatible with Arca Swiss, Markins, and Photo Clam ball heads. The Speed Booster ULTRA is compatible with virtually all full-frame SLR lenses, regardless of exit pupil distance, making it an essential tool for photographers and videographers seeking enhanced optical performance.

Key Features

• Adapts Rollei QBM lenses to Sony E-mount cameras
• Speed Booster ULTRA 0.71x magnification
• Increases maximum aperture by 1 stop
• Advanced 5-element/4-group tantalum-based optical design
• Improves MTF for sharper corners and higher detail
• Reduces distortion and vignetting
• Compatible with professional-grade f/2.8 zoom and high-speed prime lenses
• Detachable tripod foot compatible with Arca Swiss, Markins, and Photo Clam
• Durable aluminum alloy and brass construction with satin black matte finish