Review on 💡 Commlite CM-AEF-MFT Booster: Canon EF Lens to M4/3 Micro Four Thirds 0.71x Speed Booster Autofocus Adapter for Panasonic GH4, GH5, GH5S, GF6, GF1, GX1, GX7 & Olympus E-M5, E-M10, E-PL5 by Jonathan Clark

. This product is simply not supported. It was never updated to support most EF cameras and lenses it claims to work with. Compare that to other manufacturers like Metabones, who release firmware updates frequently, and Viltrox, who at least release updates from time to time (though not enough). The ENTIRE BACKGROUND of such a product is to be compatible with lenses and cameras in the real world. Ongoing support is the whole game. When companies like this fly by and don't deliver on their own product promises, they don't deserve your business. simply put, if you invest in this product, you know it's dead. and any lens you put on a camera is a complete gamble. It probably won't work. For example, it is not compatible with the hugely popular and highly acclaimed Tamron 15-30mm G2 lens (no aperture control) and works differently depending on whether it is attached to a BMPCC4K or a Z CAM E2C.