Orion's Soviet rangefinder wide — Orion-15 28mm f/6 in M39, broad view, characterful and affordable.
The Orion-15 is a Soviet wide-angle lens for the M39 (Leica thread) rangefinder mount, used on FED, Zorki and Leningrad bodies. At 28mm it was one of the wider options in the Soviet rangefinder line-up, sitting beyond the common 35mm Jupiter-12 to give a noticeably broader angle of view for landscape and architectural framing.
This is a manual-focus, rangefinder-coupled Leica Thread Mount lens with a 28mm focal length and an f/6 maximum aperture. It uses the 39mm rangefinder thread and mounts on Leica screw bodies, subject to the slight Soviet-versus-Leica register difference. The modest f/6 maximum aperture reflects its wide-angle design and keeps the lens small and light for its coverage.
As a wide-angle rangefinder lens the Orion-15 suits landscape, travel, street and architecture, where its broad field of view and generous depth of field at f/6 make focusing forgiving. The slow aperture is best paired with good light or a tripod. Its rendering is that of a vintage Soviet wide, valued for a characterful look rather than clinical corner-to-corner uniformity.
On the used market the Orion-15 is a distinctive and affordable Soviet wide, offering strong value for the coverage. Soviet QC varied by year and factory, so check each sample individually. Because it is a wide lens on a rangefinder, an external viewfinder is often used for framing. Adapting to Leica may need a register check or shim. Inspect for haze and coating wear, feel the aperture ring, and test focus. It adapts readily to mirrorless with an M39 adapter.