Voigtlander Nokton 40mm f/1.4

NormalMount: Leica M40mmf/1.4 – f/16
Introduced: 2008

Voigtlander Nokton Classic 40mm f/1.4 is the Cosina-made Voigtlander rangefinder lens designed around the Bessa-T's 40/50/75mm framelines — a focal length missing from the Leica M lineup. The 40mm sits between traditional 35mm reportage and 50mm portraiture, offering a "tweener" perspective that some photographers find more natural than either.

Key features

  • Leica M bayonet mount — uses 35mm framelines on Leica M bodies (close approximation; not exact)
  • 6-element/4-group classical formula
  • 43mm filter thread
  • Manual aperture + manual focus
  • Two coating variants: SC (Single-Coated, vintage rendering) and MC (Multi-Coated, modern contrast)
  • 10-blade aperture for circular bokeh

Use case + rendering

The Nokton Classic 40/1.4 is the interpretive walk-around Leica M lens. The 40mm focal length is more inclusive than 50mm but tighter than 35mm — close to the human "natural perspective" of casual viewing. SC version particularly favored for B&W street work; MC for general color use.

On Leica M bodies the 40mm uses 35mm framelines, which slightly undercount the actual frame — be aware of the small mismatch when composing tight subjects. The Bessa-T was the only camera with native 40mm framelines.

Compatible bodies

  • Leica M6 / Leica M6 TTL — uses 35mm framelines
  • Leica M4
  • Leica M3 — uses 50mm framelines (closer match to actual 40mm field)
  • All later Leica M and digital M bodies
  • Voigtlander Bessa-T (native frameline support)

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