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Metabones Minolta MD to Fuji X-mount Speed Booster ULTRA 0.71x (MB_SPMD-X-BM3)
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Or ask about:
| Type of Product | Adapters for lens |
| Adapter is for cameras | Fuji X |
| Adapter is for lenses | Minolta MD |
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Metabones Minolta MD to Fuji X-mount Speed Booster ULTRA 0.71x (MB_SPMD-X-BM3)
- Compatible with Minolta MD lenses and Fuji X-mount mirrorless cameras.
- Increases maximum aperture by 1 stop, enhancing light gathering capability.
- Improves Modulation Transfer Function (MTF) for sharper image quality.
- Reduces focal length by a factor of 0.71x, making lenses wider.
- Features a patented 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass developed by Caldwell Photographic.
- Rubber gasket seals the X-mount connection to protect against dust and moisture.
- Constructed from aluminum alloy and brass with chromium plating for durability.
- Satin surface finish for a premium look and feel.
- Includes a detachable Arca-type tripod foot compatible with Arca Swiss, Markins, and Photo Clam ball heads; can be clamped directly or attached to a quick release plate via a 1/4-20 screw.
Lens Compatibility Notes
Certain Minolta lenses require modification of their aperture levers to be compatible, as the levers must not protrude more than 10.5 mm from the lens flange surface when used with the Speed Booster®:
- Minolta MD 24mm f/2.8
- Minolta MC 28mm f/2.5
- Minolta MD 35mm f/2.8
- Minolta MD 85mm f/1.7
- Minolta MD 135mm f/2.8
- Minolta MD 135mm f/3.5
- Minolta MC 200mm f/4
- Minolta MD 35-70mm f/4
Speed Booster ULTRA Optical Performance
The Speed Booster ULTRA features an advanced 5-element/4-group optical design with ultra-high index tantalum-based glass, delivering exceptional optical performance with sharper corners, reduced distortion, and minimized vignetting.
With a 0.71x magnification, it effectively reduces the crop factor of APS-C sized sensors (such as Fuji X-mount and Sony E-mount cameras) from 1.5x to approximately 1.07x, providing a wider field of view closer to full-frame.
The design utilizes exotic materials at the forefront of glassmaking technology, ensuring excellent correction for virtually all full-frame SLR lenses regardless of exit pupil distance.
This adapter performs exceptionally well with professional-grade f/2.8 zoom lenses like Canon and Nikon 24-70mm f/2.8 and 70-200mm f/2.8, effectively transforming them into 17-50mm f/2.0 and 50-142mm f/2.0 high-speed zooms, respectively.
High-speed prime lenses such as a 50mm f/1.2 become approximately 35.5mm f/0.9 lenses, delivering excellent contrast and resolution from the center to the edges of the image.
