Experience the innovative fusion of functionality and versatility with the Vizelex Nd Throttle Lens Mount Adapter, a high-quality solution for photographers and videographers looking to expand the capabilities of their Canon Eos Ef/Ef-s D/Slr lenses. This durable adapter is designed to seamlessly connect your cherished lenses to select L-mount mirrorless cameras, breathing new life into your vintage glass and saving you the expense of investing in new lenses.Crafted with precision, the Vizelex Nd Throttle Adapter features a built-in variable Nd filter offering a wide range of density adjustments from ND2 to ND256, equivalent to 1 to 8 stops. This user-friendly dial allows for effortless control over the amount of light entering the lens, enabling you to achieve the perfect exposure in both bright and low light conditions.