Metabones Canon FD/FL to Micro FourThirdsSpeed Booster ULTRA 0.71x (Black Matt)
by MetabonesCanon FD and FL mount lens to Micro Four Thirds (MFT /M43) mount cameras ;
Compatible with Panasonic, Olympic, Blackmagic Design M43-mount cameras ;
Industry's best aperture clickless ring covers an 8-stop range marking, clearly indicating actual number off-stops. No more guesswork. (Patent granted) ;
Advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass by Caldwell Photographic in the USA
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Canon FD and FL mount lens to Micro Four Thirds (MFT /M43) mount cameras ;
Compatible with Panasonic, Olympic, Blackmagic Design M43-mount cameras ;
Industry's best aperture clickless ring covers an 8-stop range marking, clearly indicating actual number off-stops. No more guesswork. (Patent granted) ;
Advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass by Caldwell Photographic in the USA (patent granted) ;
Increase maximum aperture by 1 stop ;
Increase MTF ;
Makes lens 0.71x wider ;
Aluminum Alloy and Brass Construction with Chromium Plating ;
Satin Surface Finish ;
Detachable Arca-Type tripod foot compatible with Arca Swiss, Markins, and Photo Clam ball heads(clamp directly or attach to quick release plate by a 1/4"-20 screw).
Sharper corners, less distortion, reduced vignetting
New optical design: advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass to achieve extraordinary optical performance with improved corner sharpness, distortion and reduced vignetting.
Like the revolutionary original Metabones Speed Booster announced in January 2013, the Speed Booster ULTRA has a magnification of 0.71x, and so it effectively reduces the crop factor of mirrorless cameras with DX-sized sensors, such as Sony E-mount and Fuji X-mount cameras, from 1.5x to 1.07x. However, the new ULTRA design makes very effective use of exotic materials at the furthest limit of glassmaking technology, and as a result is well corrected for use with virtually all full-frame SLR lenses regardless of exit pupil distance. Thus, the Speed Booster ULTRA performs extremely well with professional-grade f/2.8 zoom lenses such as the 24-70mm f/2.8 and 70-200mm f/2.8 zooms by Canon and Nikon to produce 17-50mm f/2.0 and 50-142mm f/2.0 high-speed zooms, respectively. Similarly, high-speed fixed focal length lenses such as a 50mm f/1.2 will be transformed into a 35.5mm f/0.9 lens with excellent contrast and resolution from the center all the way to the edges of the image.
| Compatibility | Canon FD-mount lens to Micro Four Thirds-mount camera |
| Crop Factor | 0.71x |
| Groups/Elements | 4 / 5 |