I'm no longer impressed with this Meike 12mm. I'm using it on a BMPCC 4k setup and it works fine. Sharp, great contrast and colors and built like a tank. I have lenses that cost five times as much for my Sony setup and they don't seem to be as high quality as this one. Since then I've also bought a 25mm Meike and plan to build a whole set of cine lenses. Highly recommended!