Tamron 80-250mm f/3.8-4.5 (QZ-250) - Tamron Adaptall Mount

The Tamron 80-250mm f/3.8-4.5 (Model QZ-250) is an early Adaptall-series telephoto zoom. Known for its substantial all-metal construction, it provides a longer reach than the standard 210mm zooms of the era. It uses a rotating zoom ring rather than a push-pull design, which some photographers prefer for precision. As an Adaptall lens, it can be fitted to almost any SLR system with the correct mount. Due to its age, this model is prone to dry lubricants, which can make the focus or zoom rings stiff to operate. Inspect the internal glass for 'bloom' or haze, which is common in older Tamron coatings. SDS verifies the mechanical operation of the aperture linkage and ensures the lens elements are free from fungus. The tripod collar, if present, should be checked to ensure it locks securely.