Overview

The Spiratone Mirror 300mm f/5.6 is a T-mount mirror lens from the 1960s-70s, built solidly with a tripod ring to protect camera mounts. It offers a cheap super-telephoto option suitable for handheld use, though optical quality is limited by older single-coated glass and lack of modern computer-aided design. Strengths include affordability and portability; weaknesses are typical of vintage mirror lenses: lower contrast and fixed aperture. Best for amateur photographers experimenting with long focal lengths on a budget.