Metabones EF -RF (EOS R) Speed Booster ULTRA 0.71x

The Metabones EF -RF (EOS R) Speed Booster ULTRA 0.71x is an adapter designed to allow you to use EF and EF-S lenses on the EOS R camera. The adapter features a 0.71x magnification factor that effectively increases the lens's angle of view and provides an additional one stop of light-gathering ability. It also features a variable maximum aperture adjustment, allowing you to adjust the aperture of the lens in order to achieve the desired exposure. This adapter is designed to maintain the optical quality and performance of the lens, and its front filter threads are made of brass for durability and better imaging quality.

Product Features:

• Compatible with all EF, TS-E, and MP-E lenses.
•  Increases maximum aperture by 1 stop.
•  Reduces the focal length of the lens by 0.71x.
•  Increases the angle of view of the lens by 13%.
•  Compatible with full-frame Canon EOS R cameras.
• 5-Stop optical image stabilization.
• Includes an integrated Smart AF motor for autofocus.
•  High performance 4K optics for sharper image quality.
•  Copper core construction for minimal chromatic aberration.
•  Weather sealed housing for greater protection against dust and moisture.