Canon EF Lens to Sony E -mount T CINE Speed Booster ULTRA 0.71x

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 im

Tested Camera Bodies:
A9, A7R IV, A7R III, A7R II, A7R, A7S II, A7S, A7III, A7II, A7 (APS-C Crop mode)
A6500, A6400, A6300, A6000, A5000
PXW-FX9 (Crop mode)
PXW-FS7M2, PXW-FS5, PXW-FS7, NEX-FS700, NEX-FS100
VENICE
NEX-EA50, NEX-VG900, NEX-VG30, NEX-VG20, NEX-VG10
NEX-7, NEX-6, NEX-5R, NEX-5N, NEX-5, NEX-C3, NEX-3

Specifications:
Camera Mount Sony E (APS-C) 
Lens Mount Canon EF 
Magnification 0.71x 
Optical Design 5 Elements in 4 Groups