The NOKTON 50mm F1 Aspherical is an ultra-fast manual focus standard lens exclusively for Sony E-mount cameras. Covering a full-frame image circle, the lens is optimized for the image sensors of Sony mirrorless cameras.
The built-in distance encoder also makes the camera compatible with models equipped with 5-axis in-body image stabilization, which uses distance information to the subject for shift stabilization. It is also possible to magnify the image in the viewfinder by operating the focus ring for more accurate focus.
By manufacturing an aspherical lens from a glass material with a high refractive index, Voigtlander has created an ultra-fast lens that is portable despite its ultra-fast F1 aperture. In addition, by adopting a floating lens, a stable image quality can be obtained from the shortest shooting distance of 0.45m to infinity. Focusing is manual with a metal focus ring which has a diamond pattern for excellent and accurate focus grip.
The aperture is controlled by a mechanical ring on the lens. The aperture ring has a click-switching mechanism that allows the aperture to be used without clicks when shooting video. The aperture has 12 diaphragm blades, which allow the photographer to capture smooth out-of-focus areas and point light sources as well in a well-defined form.