Viltrox EF-L Pro Lens Mount Adapter is an auto focus adapter allowing EF/EF-S lenses to be used on Leica/Panasonic/Sigma L-mount mirrorless camera models. The professional version features a positive-lock EF lens mount to avoid movement between the lens and the camera. It also supports IS lens stabilization, EXIF transmission, electronic auto iris with an integrated Type-C upgrade port to enables its stronger compatibility with more new camera/lens models in the market. Achieve full lens performance the lens itself carries.