Tamron's budget Adaptall-2 telephoto prime — the 300mm f/5.6.
The Tamron 300mm f/5.6 is a telephoto prime from Tamron in Adaptall configuration, providing super-telephoto reach for wildlife and sports photography on the adaptable Tamron mount system.
The lens delivers 300mm at f/5.6 maximum aperture with Adaptall mount compatibility for use on most major camera systems via separate adapter rings.
The 300mm f/5.6 provides moderate super-telephoto reach at a modest aperture. The Adaptall system allows use across multiple camera mounts with one optical design.
Verify which adapter ring is included. Test focus ring and inspect elements. Adaptall adapter rings for the target mount should be confirmed before purchase.