Voigtländer Ultron 35mm f/2 I ASPH.

Voigtländer Ultron 35mm f/2 I ASPH.

Conceived as a deliberately vintage-styled member of Cosina's Voigtländer Vintage Line, the Ultron 35mm f/2 I ASPH. pairs a modern aspherical optical design with a slim, all-metal barrel and a small filigree focusing lever that recalls early Leica wide-angles [1]. Reviewers frequently note its visual kinship to the classic Leica look, and it is widely regarded as one of the most compact and budget-friendly modern alternatives to the 35mm f/2 Summicron ASPH, capable of clean, sharp results [2]. Introduced for the Leica M (VM) mount, it sits in the lineup as the moderate-aperture 35mm option below the faster Nokton 35mm family.

Voigtländer specifies an optical construction of eight elements in five groups, which according to user analysis includes a double-sided aspherical element and anomalous partial-dispersion glass to help control chromatic aberration [1][2]. The lens is rangefinder coupled, focuses to a minimum of 0.58 m, and uses ten aperture blades; the all-metal housing keeps weight to about 170 g and accepts 39 mm filters [1]. In practice, the rangefinder coupling tracks only down to roughly 0.7 m, with the remaining range to 0.58 m intended for zone or live-view focusing on mirrorless and digital bodies [2]. The VM mount adapts readily to other systems, and Voigtländer offers close-focus VM adapters for Sony E, Fujifilm X, and Nikon Z cameras [1]. Two optional hoods are listed, the round LH-4N and the rectangular LH-12, the latter giving slightly more shading thanks to its deeper construction [1].

The most important variation to understand is the split between Type I and Type II, which Voigtländer offers as two design variants rather than separate optical designs. The Type I keeps the classic appearance with the small focusing lever, while the Type II, released in March 2021, adopts a simpler, more intuitive focusing recess and is offered in black paint and silver finishes; the manufacturer states the optical formulas are identical and the principal difference is aesthetic and handling-related [1][2]. The Type I is the lighter of the two at about 170 g, against roughly 210 g for the Type II [1].

Optical qualities

Rendering Documented impressions describe clean, sharp imaging with a generally classic character [2]. Some users find the background rendering busy, while others compare its slightly swirly bokeh favorably to well-regarded Summicron 35mm designs and treat the effect as a means of subject separation [2].

Distortion and vignetting Vignetting is reported as noticeable wide open at f/2 and more pronounced than on some 35mm Summicron lenses, an effect some photographers use creatively for added depth [2].

Digital use On digital bodies, one reviewer notes optimal sharpness around f/5.6, with a visible drop in quality from diffraction by f/8 to f/11; the effect is described as less apparent on film [2].

History

Development and Launch The Ultron 35mm f/2 ASPH. for M mount was released in 2019 as part of Voigtländer's Vintage Line, a series emphasizing classic styling alongside contemporary optics [2].

Production Evolution In March 2021, Voigtländer introduced the Type II version with a revised, simpler barrel and a focusing recess in place of the lever, while maintaining the same optical design as the Type I [2]. The two remain offered as parallel design variants rather than a straightforward replacement [1].

Collector Notes The Type I is identified by its small, filigree focusing lever and classic black finish, distinguishing it from the recess-focusing Type II [1][2]. Some buyers have reported sticky focusing or occasional defective units, so checking focus action before purchase is advisable [2]. The 39 mm filter thread matches several classic 35mm lenses, and the optional LH-4N and LH-12 hoods are accessories worth confirming as included when buying used [1].

Sources

• [1] Voigtländer (Cosina). 35 mm / 1:2.0 Ultron aspherical VM. https://www.voigtlaender.de/lenses/vm/35mm-120-ultron-aspherical/?lang=en
• [2] Tahusa. Voigtlander Ultron 35mm f2 ASPH VM – Perfect for Newcomers. https://tahusa.co/lens-review/voigtlander-ultron-35mm-f2-asph-vm-perfect-for-newcomers/