Nikkor 50mm f1.4, Leica L mount, made by Nippon Kogaku around 1949. This lens was introduced as a large aperture, high-speed lens surpassing the previously released f3.5 and f2 models. However, it was short-lived, produced for only about a year because the f1.4 model was quickly finalized. At first glance, it resembles the Leica Xenon 50mm f1.5.
There are two serial numbers for this model, 905 and 907, and this particular unit is 907. Both Leica and Nikon S mounts were produced in roughly equal amounts, totaling about 800 lenses (meaning approximately 400 were made for Leica).
The lens configuration is a Sonnar type with 3 groups and 7 elements. The aperture when wide open provides a delicate and soft depiction characteristic of this lens. The minimum shooting distance is 1 meter with rangefinder coupling, and 45 cm without, which is consistent with subsequent f1.4 models. This lens offers beautiful rendering.
A rare gem.
There are some minor scratches and scuffs, but there is almost no damage to the plating, which is common in lenses from this era. It is evident that the lens has been well cared for.
It underwent a full overhaul in 2023. Currently, the aperture and helicoid operation feel smooth and precise. The rangefinder coupling is also accurate.
There are some very minor cleaning marks and small spots on the glass, but these are unlikely to affect image quality. There is no haze, and the glass is remarkably clear. This lens has exceptionally clean glass for its age. The results from actual shooting tests were also very good.
