• Lens adapter

• Focal length extension by 0.71x

• Enlargement of the maximum aperture by 1 f-stop

• advanced optical 5 element / 4 group design made of ultra high index optical glass based on tantalum

• suitable for Canon EF lenses on Fujifilm cameras with X-bayonet

• Autofocus support with phase detection (PDAF)

• Setting of focal length and aperture in EXIF

• removable AS stand base

• Flocking against internal reflection

Product description for Metabones T Speed ​​Booster ULTRA 0.71x Adapter Fujifilm X

Like the revolutionary original Metabones Speed ​​Booster®, which was announced in January 2013, the Speed ​​Booster ULTRA has a magnification of 0.71x and thus effectively reduces the crop factor of mirrorless cameras with sensors in DX size (APS-C), like 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 extreme limit of glass manufacturing technology and is therefore well corrected for use with virtually all full frame SLR lenses regardless of the exit pupil distance. The Speed ​​Booster ULTRA works perfectly with professional f / 2.8 zoom lenses such as the 24-70mm f / 2.8 and 70-200mm f / 2.8 from Canon and Nikon, around 17-50mm f / 2.0 or 50-142mm f / 2.0 high-speed zooms. Fast fixed focal lengths such as