Compatibility: The VILTROX EF-R3 Pro Speed Booster is compatible with Canon EF-mount lenses and the RF mount cameras EOS R, R5, R6, RP, C70. The new addition of the support plate makes the large lens more stable.

0.71x Speed Booster: The EF-R3 Pro booster can increase the open diameter to blur the background and better highlight the subject. The built-in optical correction, when using this adapter, will reduce the focal length of the lens by 0.71 times the original, meaning the equivalent focal length = focal length x 0.71 times the camera conversion factor.

Autofocus and aperture control: The EF-R3 Pro booster features stable, fast, and smooth autofocus, allowing you to easily photograph against changing beauty. You can also adjust the aperture of the EF lens through the body of the Canon RF mount camera.

EXIF signal transmission and IS stabilization: The golden copper contacts with excellent conductivity enhance the transmission of EXIF information between the lens and the camera body. The built-in IS stabilization makes your focus much more accurate and clear.

Firmware update support: Through continuous software updates, VILTROX helps users achieve a better photography experience, fix product errors, and continuously adapt to new EF lenses, providing more lens and camera combinations.