Industar-61/3-MC lens with a 50mm focal length and a maximum aperture of f/2.8. - Model: Industar-61/3-MC - Focal Length: 50mm - Maximum Aperture: f/2.8 - Aperture Blades: 6 - Filter Diameter: 49mm - Mount: M42 mount - Accessories: Front cap, rear cap Thank you for viewing. This is a Russian-made lens famous for its star bokeh. I have also included sample photos at the end. ■ Condition No mold, no haze. The exterior has scratches and dirt due to aging, but it is considered to be in good condition for its age. The focus ring and aperture work properly. Non-smoking, pet-free environment, stored in a dry cabinet.