TAAB HEFTY Universal Lens Focus Tab Ring, Black Accommodates lens focus ring diameter 2.50 (64mm) to 3.00 (76mm) For large lenses such as Leica Noctilux, Canon 85 1.2L May help aid focusing for street or macro photography. Universal design. Slip on and slides off with ease. Made tough and durable. Resistant to weather and rugged use.