Voigtlander Nokton 50mm f/1 Aspherical

The Nokton 50mm f/1 Aspherical is a manual-focus prime for full-frame cameras, released in 2024 and still in production.

It comes in Leica M, Sony E, Canon RF and Nikon Z versions, so buy the version made for your camera. Each version shares the same 50mm focal length and f/1 maximum aperture.

The 50mm focal length suits portraits, street scenes and everyday pictures, while the f/1 aperture opens up dim interiors, evening streets and candlelit rooms. The trade-off is focus: the lens is manual only, so it rewards slow, deliberate work rather than fast action. Photographers used to autofocus may want to try manual focusing before buying.

It weighs 1 lb 1.1 oz (484 g), a manageable weight for a full-frame prime. The Leica M version measures 2.9 in (73.6 mm) across and 2.17 in (55 mm) long. These size figures apply only to the Leica M version.

The front takes 62mm screw-in filters, so any filter you attach directly must match that thread.

At 50mm, framing suits head-and-shoulders portraits, street reportage and everyday scenes. There is no zoom, so you frame with your feet and keep one familiar viewpoint. Framing changes as you move, which suits a deliberate, walk-around style.

The f/1 aperture is the defining strength. It admits a great deal of light, so handheld pictures in dim rooms and evening streets stay within reach. At f/1 the plane of focus is also thin, which separates a portrait subject from a distant background. Stopping down deepens the plane again when more of the face must stay sharp.

Twelve aperture blades help the opening stay nearly round when you stop down. Round openings tend to render out-of-focus areas smoothly, which matters for backgrounds behind portraits.

That thin plane rewards careful focusing, and the manual ring gives direct, tactile control. The Leica M version focuses as close as 3 ft (90 cm), enough for a head-and-shoulder portrait. The optics specification scores 77/100.

There is no image stabilization. The f/1 aperture gathers more light than smaller openings, which can help keep shutter speeds workable in dim conditions, though usable exposure still depends on the light available, your ISO and how much the subject moves.

The lens has no weather sealing, so keep it out of rain and blowing dust. There is no fluorine coating on the front element.

The 62mm filter thread is the practical extra. A 62mm ND filter lets you keep the f/1 aperture in bright daylight, and other screw-in filters fit straight on. Filters in other sizes will not fit without a step ring.

One aspherical element sits among the nine. Its specially shaped surface helps correct optical faults, including distortion and spherical aberration. For frames that include straight edges, such as doorways and windows, that correction can help those lines look truer.

The construction specification scores 15/100, and the element and group totals stay in the specification table.