Voigtländer Heliar 50mm f/3.5 III

Voigtländer Heliar 50mm f/3.5 III

Cosina's modern Voigtländer line revived the Heliar name, a lens type with roots in the earliest decades of Voigtländer optics, in a compact rangefinder package. The 50mm f/3.5 III is one of several iterations of this small standard lens, supplied in Leica thread mount (M39 / LTM) and finished in bright silver. Its modest f/3.5 maximum aperture and slim barrel deliberately echo the proportions of vintage screw-mount fifties, and the Heliar design is engraved on the side of the barrel as part of that retro presentation [1].

Optically the lens uses a five-element, three-group arrangement that revives the classic Heliar layout rather than a contemporary high-speed formula [1]. The barrel is all-metal, the lens is light, and it focuses to one metre, with rangefinder coupling that allows accurate focusing on Leica and other M39-compatible bodies; the comparatively slow f/3.5 aperture also yields generous depth of field that eases rangefinder focusing [1]. A ten-blade diaphragm controls the aperture, and the front accepts unusually small 27mm filters in keeping with the lens's narrow front. Across the modern Heliar versions the controls are tightly spaced, and the engraved markings are fine, which some users find hard to read on the reflective silver finish [1].

The 50mm f/3.5 design has been produced in more than one variant over the years. Several versions exist in Leica thread mount, and the optical formula was also offered in Nikon S mount, where it was associated with the Bessa rangefinder system; collapsible versions were made in addition to rigid ones [1]. A later release adapted the same Heliar design to Voigtländer's VM bayonet for direct Leica M use [1]. Buyers should confirm the specific mount and whether a given example is collapsible or rigid, since these traits separate the otherwise similar variants.

Optical qualities

Rendering Published impressions of the modern Heliar 50mm f/3.5 describe a sharp lens that renders color accurately, consistent with the simple, well-corrected Heliar layout [1]. Documented coverage notes only mild vignetting at the wider settings that diminishes on stopping down, and a reviewer working with the design reported no obvious focus shift, barrel distortion, flare, ghosting or purple fringing in normal use [1]. Detailed, version-specific optical testing of the silver LTM model is limited, so finer points of its bokeh and contrast are best judged from samples rather than firm published measurements.

History

Development and Launch The Heliar name belongs to one of Voigtländer's historically significant lens types, and Cosina's revival deliberately ties the modern 50mm f/3.5 to that heritage, recalling the look of much older Voigtländer lenses through its design and presentation [1]. The five-element Heliar formula was reissued in small standard-lens form for rangefinder cameras, initially in screw and Nikon S mounts before a later M-bayonet edition [1].

Production Evolution The design appeared in multiple forms: collapsible and rigid screw-mount versions, a Nikon S-mount version linked to the Bessa rangefinder system, and eventually a VM-bayonet version made expressly for Leica M cameras [1]. The III designation distinguishes this particular rigid LTM iteration within that sequence.

Collector Notes Because the same Heliar 50mm f/3.5 optic was sold in several mounts and body styles, identification matters: verify whether an example is LTM or VM, rigid or collapsible, and check the engravings against the finish, as the reflective silver barrel can make the small markings difficult to read [1]. Reported specifications differ slightly between versions; the M-mount Heliar Vintage Line, for instance, has been listed at about 209 g with a 0.7 m minimum focus, whereas LeicaLensList records this LTM III at 147 g and one metre, so weight and close-focus figures should be checked against the exact variant in hand [1]. The lens is generally supplied with a screw-in metal hood and a metal front cap, accessories worth confirming when buying secondhand [1].

Sources

• [1] Leica Rumors. Voigtlander Heliar Vintage Line 50mm f/3.5 VM lens for Leica M mount review. https://leicarumors.com/2017/03/12/voigtlander-heliar-vintage-line-50mm-f3-5-vm-lens-review.aspx/