Industar‑50 50mm f/3.5 M39 Lens – Soviet Prime – Surface Marks

Overview

The Industar‑50 50mm f/3.5 in M39 mount is a compact Soviet Tessar‑type prime lens originally designed for early Zenit SLRs using the M39 SLR thread (not Leica rangefinder LTM). Known for its sharp central rendering, low contrast and classic vintage character, it remains popular with film shooters and digital users seeking a distinctive look.
This example shows surface marks, noted clearly below, but remains fully functional.

Condition

Overall Condition: Good (surface marks)

• Optics show surface marks on the front element (may reduce contrast in strong light)
• No haze or fungus observed
• Aperture blades clean and snappy
• Focus action smooth
• Exterior shows moderate cosmetic wear
• Mount clean and undamaged

Included

• Industar‑50 50mm f/3.5 lens (M39 SLR mount)
  

Key Features

• Classic Tessar‑type 4‑element design
• Compact, lightweight construction
• Distinctive vintage rendering
• Manual focus and manual aperture
• Designed for M39 SLR mount (Zenit‑3, 3M, early Zenit‑E variants)

Compatibility

• M39 SLR cameras (Zenit‑3, Zenit‑3M, early Zenit‑E with M39 throat)
• Adaptable to mirrorless systems (Z, E, RF, L‑mount etc.) with appropriate adapters
• Not compatible with Leica Thread Mount (LTM) rangefinders due to different flange distance

Collectors Notes

The M39 SLR version of the Industar‑50 is less common than the later M42 variant and remains popular among collectors of early Zenit equipment. Examples with surface marks are still desirable as budget vintage lenses with characterful rendering.

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