The Nocton Classic is a classical depiction that stands out from modern lenses that are sharp, contrast, regardless of aperture. Especially soft when opened, and when squeezed, it produces sharp sharpness. It is also attractive to control the duplicity of the lens according to the intention of shooting 40mm focal length when used as a semi-wide-angle/standard lens for high mobility. While the large diameter of the F1.4, the total length of the main unit is 1.1 inches (29.7 mm), and weighs 6.9 oz (175 g). It has a compact style that can be carried with you at all times Precision machined and tuned all-metal helicoid unit and high quality grease that provides moderate torque for smooth maneuverability focusing. Manual focus with subtle focus adjustment The lens mount uses Leica M mount compatible with Leica M mount. Not only is it used with a range meter interlock camera, it also provides a good balance of design when mounted on mirrorless digital cameras via the mount adapter It has a spacious image circle that can accommodate a full size of 35mm. It also has a very compact style compared to replacement lenses for SLRs Focusing on the fields where the "taste of lens", this lens is pursuing the beauty of photographic results. By intentionally maintaining the right amount of aberration, it is especially soft when aperture, and sharp when squeezed. You can take photos using the personality of the lens.