Let the Pro Lens Mount Adapter for B4 Mount Lenses to Sony Alpha Nex E-Mount Camera Bodies enhance your photography experience. This high-quality, durable adapter is designed to allow you to seamlessly mount a B4 2/3"" lens onto any Sony E-Mount Nex camera. Although devoid of corrective optics, this versatile adapter enables you to utilize your invaluable prime lens with your new camera, thereby saving you the expense of investing in new lenses.Crafted with precision and pristine award standards, our 'Pro' Series adapters are designed to ensure a perfect fit for your camera and lens, and to withstand professional use. The compact design of the adapter ensures there is no ""play"" between the lens and the camera, thanks to the leaf springs that mimic the camera body. This user-friendly adapter maintains and enhances the professional appearance of your equipment.