VILTROX EF-EOS M2 Auto Focus Lens Adapter 0.71x Reducer Speed Booster for Canon EF Mount Lens to Canon EF-M Mount Mirrorless Camera EOS M M2 M3 M5 M6 M10 M50 M100

The adapter works perfectly as mentioned in the description. Other than the fact that it can work for only EF lenses, could not find any issues. I am using a Yongnu 50mm lens which works completely fine with the adapter.

Great "speed booster" for adapting Canon EF/EF-S lenses. I have bought at least two of these. (I have both an M50 Mk II and an M6 Mk II. Fie on you Canon for orphaning the EF-M system. I shall never ever buy an RF Camera. I will buy into Sony system first.) Fortunately, there are adapters for a wide variety of vintage mounts to EF mount. Incidentally, a speed booster nearly preserves the field of view and light transmission of an EF/EF-S mount lens. This is in contrast to a regular mount adapter such as the Viltrox EF-EOS Auto Focus Lens Adapter which does not do so.

Nice adaptor for m mount

Wonderful adapter! Works great and it even boosts the f number!

i notice that it is taking much time to focus and also it is using much more battery, even when i turn of the camera with decent amount of battery and when after few days i turn on the camera then it drains too much battery, i notice too much focus hunting is there. and also it is adding a Lense in between so it is obvious that it will reduce the image quality as certain level as well.