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Metabones Sony Alpha to Fuji X-mount Speed Booster ULTRA 0.71x (MB_SPA-X-BM2)
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| Type of Product | Adapters for lens |
| Adapter is for cameras | Fuji X |
| Adapter is for cameras | Sony E |
| Adapter is for lenses | Sony E |
| Adapter is for lenses | citai |
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Optical Design and Performance
The Metabones Sony Alpha to Fuji X-mount Speed Booster ULTRA 0.71x (MB_SPA-X-BM2) features an advanced 5-element/4-group optical design that incorporates ultra-high index tantalum-based optical glass, developed by Caldwell Photographic in the USA (patent granted). This design achieves extraordinary optical performance with sharper corners, less distortion, and reduced vignetting.
Key Optical Benefits
- Increases maximum aperture by 1 stop.
- Improves Modulation Transfer Function (MTF) for enhanced image sharpness.
- Makes the attached lens 0.71x wider, effectively reducing the crop factor.
Compatibility and Usage
The Speed Booster ULTRA is designed to reduce the crop factor of mirrorless cameras with DX-sized (APS-C) sensors, such as Sony E-mount and Fuji X-mount cameras, from 1.5x to approximately 1.07x. It is well corrected for use with virtually all full-frame SLR lenses regardless of exit pupil distance.
This adapter performs exceptionally well with professional-grade f/2.8 zoom lenses, such as Canon and Nikon 24-70mm f/2.8 and 70-200mm f/2.8 zooms, effectively transforming them into 17-50mm f/2.0 and 50-142mm f/2.0 high-speed zoom lenses, respectively. High-speed prime lenses, such as a 50mm f/1.2, are transformed into a 35.5mm f/0.9 lens, delivering excellent contrast and resolution from the center to the edges of the image.
Additional Features
- The tripod foot is detachable and compatible with Arca Swiss, Markins, and Photo Clam ball heads, providing versatile mounting options.
Disclaimer
Metabones is not licensed, approved, or endorsed by Sony.
