Make the most of your existing collection of T-mount glass with this Vello Lens Adapterthat will allow you to mount these lenses to a Sony E-mount camera. Precise construction makes it easy to attach these adapted lenses to your camera and keeps it secure during use. Infinity focus is guaranteed, ensuring that you get proper functionality our of all your optics. This model features a secondary ring with three positioning screws so that you can ensure your lens is mounted straight. Additionally, the adapter is made from a durable zinc alloy and features a matte black finish on the inside to reduce the potential for glare and reflections that can negatively impact image quality.