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Metabones
Metabones Minolta MD to Fujifilm X Speed Booster ULTRA camera accessory
Adapts Minolta MD lenses to Fujifilm X cameras, widening view by 0.71x and brightening maximum aperture to f/0.90 with an f/1.2 lens
- Gain an f/0.90 aperture from an f/1.2 lens for brighter low-light shots
- Reduce APS-C crop factor to 1.07× with 0.71× focal-length multiplier for wider views
- 5-element, 4-group optics with tantalum glass keep distortion below 1% across the frame
- Turn a 50 mm f/1.2 into a 35.5 mm f/0.9 for shallow depth-of-field creativity
- Precision metal construction locks Minolta MD lenses securely to Fujifilm X-mount bodies
Metabones MD-X Speed Booster ULTRA
The Metabones Speed Booster ULTRA connects Minolta MD lenses to Fujifilm X-mount cameras while expanding the angle of view. It uses a 5-element, 4-group optical design with high-refractive-index glass to reduce the crop factor from 1.5x to 1.07x and increase maximum aperture by 0.71x.
Photographers using Minolta MD glass on APS-C
This adapter suits photographers who want wider fields of view and brighter apertures with existing Minolta MD lenses. It is not for users without Minolta MD lenses, nor for shooters requiring autofocus or electronic aperture control, as the connection is purely mechanical.
0.71x focal reduction and aperture gain
The 0.71x multiplier turns a 50mm f/1.2 lens into a 35.5mm f/0.90 equivalent, delivering a near-full-frame perspective on APS-C sensors. Optical performance is optimised for f/2.8 zooms and fast primes, with rectilinear distortion kept below 1%.
Highlights
- Gain an f/0.90 aperture from an f/1.2 lens for brighter low-light shots
- Reduce APS-C crop factor to 1.07× with 0.71× focal-length multiplier for wider views
- 5-element, 4-group optics with tantalum glass keep distortion below 1% across the frame
- Turn a 50 mm f/1.2 into a 35.5 mm f/0.9 for shallow depth-of-field creativity
- Precision metal construction locks Minolta MD lenses securely to Fujifilm X-mount bodies
Specifications
No published specifications for this item yet.
Questions about this item
How much faster does the aperture become when I mount an f/1.2 Minolta MD lens on this adapter?
An f/1.2 lens reaches f/0.90, gaining one full stop of light for low-light shooting and shallower depth of field.
What does the 0.71x magnification factor do to the crop on my APS-C Fujifilm X camera?
It reduces the 1.5x crop to 1.07x, giving a near-full-frame field of view with Minolta MD lenses.
Will this Speed Booster ULTRA fit inside my camera bag alongside a standard zoom?
Its compact 5-element optical design adds minimal length, letting you pack it with a typical f/2.8 zoom or prime.
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