Hanimex — M42-mount 135mm f/2.8 multi-coated manual telephoto prime, also sold for Nikon, Canon, Minolta
Hanimex was an Australian import-export firm founded by Jack Hannes in 1947 that sold cameras and lenses sourced from Japanese and European OEM factories rather than manufacturing its own glass. The 135mm f/2.8 was a long-running independent telephoto prime in its 1970s-80s SLR lens range.
The MC version uses a reported 5-element, 4-group formula behind an 8-blade iris running f/2.8-f/22, weighs around 350g, takes 55mm filters, and focuses to 1.5 metres. Hanimex sold it in M42, Nikon F, Canon FD, Minolta MD, Pentax K, Olympus OM, Konica AR and Contax/Yashica mounts.
Owners report usable sharpness from f/4 with smooth backgrounds, though wide open images soften with visible colour fringing. Build quality is inconsistent between samples, since Hanimex sourced the design from more than one subcontractor, so some copies feel all-metal while others use more plastic.
This trades cheaply on the UK used market, well below equivalent Nikkor or Takumar 135mm primes. Worth checking the aperture blades for oil residue, confirming the diaphragm stops down cleanly across its range, and inspecting the rear element for haze or fungus before buying.