Soligor's budget telephoto for M39 — the 135mm f/4 for screw-mount cameras.
The Soligor 135mm f/4 in M39 (Leica Thread Mount) is a telephoto prime from Soligor for LTM cameras, intended for use with Leica and Soviet rangefinder cameras that use the M39 screw mount. The M39 mount is more commonly associated with Leica cameras than with Soligor's usual SLR lens range.
The lens delivers 135mm at f/4 maximum aperture with M39 screw thread coupling, manual focus and aperture, and full-frame 35mm coverage. Third-party M39 lenses were less common than SLR variants as the LTM market was primarily served by Leitz and Soviet manufacturers.
The Soligor 135mm f/4 M39 is an unusual third-party LTM lens, adaptable to Leica M via an M39-to-M adapter. The 135mm focal length on LTM rangefinders typically requires rangefinder coupling verification for accurate focus.
Check M39 thread coupling for clean engagement. Verify any rangefinder cam coupling. Test aperture blade operation. Inspect element condition. For M body adaptation, confirm M39-to-M adapter is available and test focusing accuracy.