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Metabones ROLLEI QBM to E-mount Speed Booster ULTRA 0.71x
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| Type of Product | Adapters for lenses |
| Type of Product | Adapters for lens |
| Compatible | Sony |
| Adapter is for cameras | Sony E |
| Adapter is for lenses | citai |
| Diametrs IN, mm | E-mount |
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Metabones ROLLEI QBM to Sony 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.
This professional-grade lens adapter enhances 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
Included Accessories
- Metabones Rollei QBM to Sony E-mount Speed Booster ULTRA 0.71x
- Detachable tripod foot
- Front and rear protective caps
- User documentation
Specifications
- Lens Mount: Rollei QBM
- Camera Mount: Sony E
- Magnification Factor: 0.71x
- Maximum Aperture Increase: +1 stop
- Optical Design: 5 elements in 4 groups, tantalum-based optical glass
- Infinity Focus Supported
- Build Material: Aluminum alloy and brass with chromium plating
- Finish: Satin black matte
- Tripod Foot: Detachable, Arca-type compatible
