Minolta's legendary constant f/4 telephoto zoom — the 'Beercan' — a cult classic on Sony A-mount.
The Minolta AF 70-210mm f/4, nicknamed the 'Beercan' for its cylindrical shape, launched in 1985 as one of Minolta's earliest autofocus telephoto zooms. It uses the Minolta A-mount which later became Sony A-mount, ensuring compatibility with Sony SLT cameras.
Optically good for its era — sharp in the centre with pleasant rendering. The constant f/4 aperture is a real advantage over variable-aperture consumer zooms. Autofocus is driven by the camera body's screw-drive motor. Build quality is robust metal construction.
Minolta A / Sony A-mount. 55mm filter thread. Approximately 750g — solid metal build. No stabilisation. Full-frame coverage. Push-pull zoom design. Minimum focus distance 110cm. Available in several versions — later versions have improved coatings.
A cult favourite among Sony A-mount and adapted mirrorless users. Very cheap used despite strong reputation. Check zoom mechanism for smooth action — the push-pull design can develop play. Adapts to Sony E-mount via LA-EA adapters. Remarkable value for a constant f/4 telephoto.