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Metabones ALPA to E Speed Booster ULTRA 0.71x (MB_SPALPA-E-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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We offer leasing from Aizdevums SIA, Incredit SIA, ESTO.
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When using leasing services, carefully evaluate your options to repay the loan!Lease
Metabones ALPA to E Speed Booster ULTRA 0.71x (MB_SPALPA-E-BM2)
Optical Design and Performance
The Speed Booster ULTRA 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. This design achieves extraordinary optical performance with sharper corners, less distortion, and reduced vignetting compared to previous models.
With a magnification factor of 0.71x, it effectively reduces the crop factor of mirrorless cameras with DX-sized sensors (APS-C), such as Sony E-mount and Fuji X-mount cameras, from 1.5x to approximately 1.07x. The ULTRA design utilizes exotic materials at the forefront of glassmaking technology, allowing it to be well corrected for use with virtually all full-frame SLR lenses regardless of exit pupil distance.
Compatibility and Usage
The Speed Booster ULTRA 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 fixed focal length lenses, like 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.
Key Features
- Increases maximum aperture by 1 stop, allowing more light for improved low-light performance.
- Enhances Modulation Transfer Function (MTF) for better image sharpness and contrast.
- Makes lenses 0.71x wider, effectively reducing crop factor and expanding field of view.
- Advanced 5-element/4-group optical design with ultra-high index tantalum-based optical glass (patent granted).
- Detachable tripod foot compatible with Arca Swiss, Markins, and Photo Clam ball heads for versatile mounting options.
Disclaimer
Metabones is not licensed, approved, or endorsed by ALPA or Sony.
