Belomo INDUSTAR 69
A compact Soviet 28mm f/2.8 pancake lens with a unique flange design, made for Chaika half-frame cameras.
Overview
The Belomo Industar-69 is a 28mm f/2.8 camera lens produced in the Soviet Union during the late 1960s and early 1970s. Designed as a compact, lightweight optic, it features a pancake form factor and was built for use with the Chaika-2, Chaika-2m, and Chaika-3 half-frame 35mm cameras. Despite its simple optical design inspired by the Tessar formula, it has gained attention as an interesting vintage alternative to more expensive pancake lenses like the Fujinon 27mm f/2.8. The lens includes a front-facing aperture ring and a focusing ring that some users find awkward but functional.
Specifications
| Focal Length | 28mm |
| Maximum Aperture | f/2.8 |
| Mount | M39 |
| Minimum Focusing Distance | 0.80m |
| Length (from flange) | 18/19mm |
| Filter Size | 22.5mm |
| Flange Distance | 27.5mm |
Design
The Industar-69 uses a pancake lens design with a simple optical layout based on the Tessar formula. It features a front-facing aperture ring and a compact build that contributes to its low profile. Due to its non-standard flange distance, it typically requires modification—commonly referred to as a "focus fix"—to achieve infinity focus when adapted to modern mirrorless cameras.
Context
Mass-produced with an estimated run of at least two million units, the Industar-69 was part of a Soviet-era effort to provide affordable, functional optics for consumer cameras. It was specifically designed for integration with the Chaika series of half-frame 35mm cameras, supporting compact and portable photography during its time.
Market
Listings show the Industar-69 selling individually for around $60–$70, with some units advertised as serviced. Due to its non-standard flange distance, a focus modification is often necessary for use on mirrorless systems, a well-documented process with video tutorials available online. Its rarity is debated, with some questioning whether it is a rare prototype, though high production numbers suggest otherwise.
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