Because the Vizelex Nd Throttle Fusion Smart Af Lens Mount Adapter is designed with the innovative Fusion technology, it enables seamless electronic communication between Canon Ef-s lenses and select L-Mount Alliance cameras. This high-quality adapter not only facilitates the mounting of vintage lenses to digital cameras but also restores automated functions such as auto focus, aperture control, and image stabilization. The built-in variable Nd filter, a distinctive feature of the Vizelex Nd Throttle, offers 1 to 8 stops of light reduction, providing photographers and videographers with enhanced creative control over exposure and depth of field. This user-friendly feature eliminates the need for changing filters with every exposure change, making it a versatile tool for any digital imaging enthusiast. The adapter also includes a micro Usb port for firmware updates, ensuring a nearly future-proof solution for your lens-camera setup.