Voigtlander 50mm f/2 APO-Lanthar VM Lens for Leica M-Mount, Black with Chrome Rim {49}

Voigtlander's apochromatic 50mm prime for Leica M, built to near-zero chromatic aberration.

The APO-LANTHAR designation isn't marketing shorthand. It signals a specific optical commitment: bringing the focus points of red, green, and blue wavelengths into a single plane, driving on-axis chromatic aberration as close to zero as achievable. Voigtlander accomplishes this through a combination of anomalous partial dispersion elements and aspherical glass, working together to suppress the full range of aberrations that plague conventional 50mm designs. The result is color accuracy that holds up under scrutiny at 100%, not just in the center but across focal distances where fringing tends to creep in.

At f/2, the 12-blade diaphragm produces a circular aperture opening, which translates to smooth, round out-of-focus discs from point light sources than the geometric shapes common in lenses with fewer blades. The manual focus helicoid is precision-machined, giving the kind of tactile feedback that makes critical focus on a rangefinder feel deliberate than approximate. The 49mm filter thread keeps the front element compact and compatible with a wide range of existing filter sets. For anyone shooting a M-mount body, Leica film or digital, or via adapter on Sony FE, this is a lens built to hold its own against the most demanding pixel-peeping workflows.

Who It's For

Street and documentary photographers working Leica M bodies will find the compact form factor and manual focus helicoid pair naturally with rangefinder shooting technique. Portrait photographers who print large or deliver high-resolution retouched files benefit directly from the apochromatic correction, since fringing around hair and skin edges at f/2 is a known problem with non-APO designs. Film shooters with color-critical work, slide film, commercial reproduction, gain from the RGB wavelength alignment across focal distances. Mirrorless adapters users on Sony or Nikon Z bodies get a 50mm with enough optical pedigree to justify the manual-only workflow.

Key Features

• Apochromatic design minimizes on-axis RGB chromatic aberration
• Two double-sided aspherical elements suppress full aberration range
• Manual focus helicoid with precision-machined feel
• 12-blade diaphragm renders circular bokeh at wider apertures
• 49mm filter thread for broad compatibility
• Leica M-mount, works on film and digital M bodies

FAQ

What does apochromatic design actually do for a 50mm lens?

It brings red, green, and blue wavelengths into focus on the same plane, eliminating on-axis color fringing that normally shows up in corners and at distance. You get color accuracy that holds from edge to edge, not just in the center.

How does the 12-blade diaphragm affect bokeh?

At wider apertures, it produces a circular opening rather than polygonal, which renders out-of-focus point lights as smooth, round discs instead of the geometric shapes you'd get from fewer blades.

Is this lens sharp enough for pixel-level inspection?

Yes. The combination of apochromatic elements and aspherical glass controls aberrations across the entire focal field. You can shoot wide open at f/2 and land critical focus without compromise.

What's the manual focus helicoid like on the APO-LANTHAR?

Precision-machined with tactile feedback that makes rangefinder focusing feel deliberate rather than approximate. The throw is smooth and responsive.

Will this work on digital M-mount bodies?

Yes, on any Leica M digital body or M-mount mirrorless via adapter. The 49mm filter thread also keeps compatibility broad across existing filter sets.

Does apochromatic design require special coatings?

Not special coatings-special glass. Anomalous partial dispersion elements and aspherical glass work together to suppress color separation at the source, before coatings even come into play.

How much does it weigh compared to other M-mount 50mms?

0.91 lb makes it compact and balanced on rangefinder bodies without bulk or heavy front-end lift.