SEL50F18F is a Sony E-mount lens for full-frame cameras. There are no issues with image quality or operation, but there is a stain that looks like water droplets in the second image, and a blue mold-like stain in the third image. Please understand that this is a used item. - Model Name: FE 50mm F1.8 - Brand: SONY - Lens Diameter: 50mm - Maximum Aperture: F1.8 - Mount Type: E-mount - Other Features... Lens hood included, Front lens cap included, Rear lens cap included