Viltrox 0.71x Speed-Booster Canon EF-M M50, M50 ii, Compatible

It works with EF and EF-S lenses for apsc cameras. This will bring your footage to the next level if you want to mount Full frame lenses to Apsc crop sensor. Just becareful when using it with Apsc Ef or efs lenses it will vignette in 1080p, however you can cancel the vignette by cropping with IS enabled. This will work perfectly if you want to get the best 4k out of your canon m50 and it will Give you extra F-stops for a creamy and blurry background just like the full frame look. Also firmware is updated so it will work on all the ef and efs lenses. Return in 48h if you don't like it or have any issues. I can drop it over if in london or woodstock