The Speed Booster ULTRA by Metabones is a highly advanced lens adapter specifically designed for using Canon EF and EF-S lenses on Micro Four Thirds cameras. With a conversion factor of 0.71x, this adapter allows for improved light transmission and enhanced image quality by effectively reducing the focal length of the attached lenses. The adapter supports autofocus functions, enabling precise and fast focusing, making it ideal for photographers who want to take advantage of their Canon lenses on MFT cameras. The Speed Booster ULTRA features a sleek black design and offers a robust construction that ensures both durability and reliability. With this adapter, users can expand the creative flexibility of their lenses while benefiting from Micro Four Thirds technology.