Voigtländer Nokton 50mm f/1.2

Voigtländer Nokton 50mm f/1.2

Built by Cosina under the Voigtländer name, this Nokton packs an f/1.2 maximum aperture into a barrel that stays close in size and weight to a conventional 50mm, which is much of its appeal for Leica M users. It is frequently positioned as a more affordable, compact alternative to Leica's own fast 50mm lenses, offering most of the speed of a Summilux in a smaller and far cheaper package [1][2]. The lens reached the market in 2018 in its M-mount (VM) form, with a separate E-mount version following later [1][2].

Optically the lens uses eight elements in six groups, including aspherical surfaces, and the aperture is built around 12 straight blades that close down to f/22 [1][2]. The barrel is predominantly metal with engraved, paint-filled markings, and the focus ring travels roughly 120 degrees from the 0.7 m minimum distance to infinity with even resistance, while the aperture ring uses half-stop clicks [1]. The lens is rangefinder coupled and shows essentially no rangefinder blockage at infinity, though some intrusion into the 50mm frame line appears at the closest focus distance; reviewers have noted the front of the barrel slightly clips the rangefinder view [1][2]. The filter thread is 52 mm and no hood is included in the box, so the optional LH-8 or LH-10 hood must be bought separately [2]. The lens lacks six-bit coding, but users can manually select a lens profile on the camera, with the pre-aspherical 50mm Summilux profile cited as a workable match [2].

In 2023 the line expanded with an X-mount version for Fujifilm cameras, and an updated VM "Aspherical II" was later introduced, so buyers should confirm which generation and mount they are looking at [3].

Optical qualities

Rendering Documented behavior is that of a fast standard lens tuned for an appealing wide-open look rather than clinical correction. Reviewers describe smooth bokeh that is unusually pleasant for a 50mm, helped by a degree of undercorrected spherical aberration that adds a slight glow at f/1.2 and f/1.4 [1]. Despite the 12 straight blades, out-of-focus highlights can occasionally take a 12-sided shape, and onion-ring texture inside bokeh circles is largely absent [1].

Sharpness On a thin-sensor-stack camera such as the Leica M10 the lens performs strongly at infinity and at portrait distances, with the center already sharp at f/1.2; it softens noticeably wide open at the closest distances and benefits from stopping to about f/2.0 [1]. By f/5.6 it is sharp across the frame into the corners [1][2]. Adapted to cameras with a thick sensor stack, such as some Sony bodies, midframe and corner performance at wide apertures is weaker and benefits from stopping down [1].

Flare resistance Reviewers rate flare resistance as very good for such a fast lens with a large front element, with strong ghosting only in staged, extreme conditions [1][2].

Distortion and vignetting Distortion is minimal, amounting to a trace of pincushion at the edges, and a correction profile is available in Adobe software [1]. Vignetting is strong wide open, around 3.3 EV at f/1.2, and clears progressively on stopping down [1].

Aberrations Lateral chromatic aberration is minor and easily corrected, while some longitudinal color is visible in demanding scenes at wide apertures, as expected from a fast lens; the design shows mild focus shift on stopping down, so focusing at working aperture is advised [1].

Digital use Performance is sensitive to sensor cover-glass thickness. The lens was designed with thin-stack rangefinder sensors in mind and does best on Leica M digital bodies, while adaptation to thicker-stack mirrorless cameras degrades off-center sharpness wide open [1].

History

Development and Launch The M-mount Nokton 50mm f/1.2 was released around 2018 as part of Cosina's ongoing Voigtländer line of fast manual-focus rangefinder lenses [1][2]. It arrived after the company's 40mm f/1.2 Nokton and was conceived as a compact, fast normal lens that could compete on price and size with Leica's fast 50mm offerings [1][2]. The Voigtländer name is a historic German brand now used under license by Cosina of Japan, which manufactures these lenses [2].

Production Evolution The lens has appeared in more than one mount and generation. The original M-mount (VM) version was joined by an E-mount model for Sony, a Fujifilm X-mount version in 2023, and a later updated VM "Aspherical II" release, so the family spans several variants under the same focal length and aperture [1][3].

Collector Notes Voigtländer lenses of this generation are valued as practical user optics rather than collectibles, and they generally do not command the collector premiums of comparable Leica lenses [2]. Buyers should verify the exact variant and mount, since M-mount, E-mount, X-mount and the later Aspherical II versions coexist [1][3]. The lens lacks six-bit coding, so frame-line behavior and any in-camera lens profile must be set manually [2]. Because no hood ships in the box, confirm whether the correct LH-8 or LH-10 hood is included with a used purchase, along with the front and rear caps [1][2]. One minor point worth noting is a small discrepancy in published barrel length: a detailed review lists about 47 mm while the manufacturer-derived figure is 49 mm, with the latter being the value recorded here [1][2].

Sources

• [1] phillipreeve.net (Bastian Kratzke). Review: Voigtlander VM 50mm 1.2 Nokton. https://phillipreeve.net/blog/review-voigtlander-vm-50mm-1-2-nokton/
• [2] Macfilos (Dirk Saeger). Review: The Voigtländer 50mm f/1.2 Nokton VM for M-Mount. https://www.macfilos.com/2023/07/14/review-the-voigtlander-50mm-f12-nokton-vm-for-m-mount/
• [3] Fuji Addict. Voigtlander NOKTON 35mm F1.2 Aspherical IV, NOKTON 40mm F1.2 Aspherical II, and NOKTON 50mm F1.2 Aspherical II Updates Coming!. https://fujiaddict.com/2025/04/15/voigtlander-nokton-35mm-f1-2-aspherical-iv-nokton-40mm-f1-2-aspherical-ii-and-nokton-50mm-f1-2-aspherical-ii-updates-coming/