A quasi-wide-angle lens with a large aperture of f/1.5 that integrates three elements: a compact size, excellent optical performance, and a large aperture. Adopting two double-sided aspherical lenses, it exhibits excellent optical performance from the maximum aperture of F1.5. Manual focus for reliable focus operation. The use of an all-metal helicoid unit that has been processed and adjusted with high precision and high-quality grease that produces just the right amount of torque enables focusing with a smooth operating feel. It enables fine focus adjustment. Bayonet type VM mount The lens mount uses a VM mount that is compatible with the Leica M mount. Not only can it be used with a rangefinder-linked camera, but it also has an excellent design balance when attached to a mirrorless digital camera via a mount adapter. Equipped with a rangefinder interlocking system The high-precision rangefinder interlocking mechanism enables severe focusing near the maximum aperture. A generous image circle has been secured for 35mm full-frame format. In addition, it has a very compact style compared to interchangeable lenses for single-lens reflex cameras.