Review on 💥 Enhance Your Canon EF Lens Performance with VILTROX EF-M2 Speed Booster Adapter - Auto Focus, 0.71x, M43 Camera Compatibility, USB Update Port by Brandon Burnham

Firstly I'm pretty sure this is the Mark I version and not the II that people recommend. My mistake. I bought it to use the Canon 24-105L with the Panasonic GH5 for video. I set the focus to infinity and when the camera works it's great. Even pressing AF works when needed. But. It never works The camera keeps freezing so that you have to pull out the battery, the firmware is updated, the mount is adjusted. etc. The aperture stops working intermittently or can be set to "wide open" when the lens is clearly closed. I have contacted Viltrox and received no reply. Most of these issues became apparent when the Revain return window ended. I don't have Metabones but I think they have better customer service. I tried to use it professionally and would never recommend it. I bought a Panasonic 12-35 2.8 ii and have never looked back.