A seamless, integrated solution for the Zeiss Milvus primes being used for motion picture projects. The Zeiss Milvus 80mm Front ring is designed to work seamlessly with a wide range of matte boxes and filter trays with an 80mm clamp-on. All of the Milvus Fronts feature 77mm filter threads for use with common sized filters. Machined from billet aluminum and black anodized for a rugged, yet sleek finish, the Milvus fronts from Duclos Lenses bring these beautiful primes one step closer to a full cinema lens.