Introduction Along with an external appearance similar to the Otus line, including the all-metal barrel (complete with long focus throws and smooth coverings on the focus and aperture collars on the Nikon-mount version), the Milvus models can boast a few features not found on their more expensive Otus counterparts. All models feature weatherproof sealing, and users can use a supplied tool to “de-click” the aperture collars on the Nikon-mount models when shooting video. The Milvus model also adopt new T* lens coatings, but it’s not clear if these are similar to those already used on the