This is the SONY FE 50mm F1.8 SEL50F18F. A "Kenko 49mm Lens Filter MC Protector" for lens protection is also included. I purchased it last June and used it about 5 times. It has been stored in a dark place after use. Since it has been used so few times, there are no noticeable scratches on the exterior, dust, or mold inside the lens. Please consider this if you are concerned, as it has been stored by an amateur. Brand: SONY Lens Type: Single Focus Focal Length: Standard Optical Zoom: 1.0x Focus: Autofocus Mount: Sony E Compatible Sensor Size (Max): Full Size Focal Length (Wide): 50.0 mm Focal Length (Tele): 50.0 mm Aperture: 1.8 F Minimum Shooting Distance (m): 0.45 m Interchangeable Lens Features: Circular Aperture Image Stabilization: None Filter Compatibility: Yes Filter Diameter: 49.0 mm Dimensions (Maximum Diameter): 68.6 mm Dimensions (Length): 59.5 mm Weight (g): 186.0 g