The EF-EOS M lens mount adapter has been designed to allow the use of Canon EF-series lenses with EF-M compatible digital cameras with interchangeable lenses. It features a gold-plated electronic contact and an autofocus function. The built-in metal electronic contact ensures precise focusing. The adapter can achieve autofocus and allows for adjustable aperture from the camera body to the lens aperture. Additionally, it is made of durable metal material.