The Canon EF-mount Milvus 135mm f/2 ZE from ZEISS is a Sonar-type lens offering high sharpness, speed, and accurate contrast and color rendering. A floating elements system is also used, for consistent performance throughout the focusing range, in order to achieve even sharpness and clarity. Additionally, Milvus-series lenses also feature an equally aesthetic and durable frosted, anodized metal lens-barrel surface along with a weather-sealed construction to protect against dust and moisture. Short telephoto prime is designed for full-frame Canon EF-mount cameras, however, can also be used with APS-C models where it provides a 216mm equivalent focal length. Sonnar's optical concept suits the combination of a large maximum aperture and long focal length and also contributes to notable sharpness, well-controlled flare, and high contrast. ZEISS T* anti-reflective coating has been applied to each lens surface to help minimize reflections and provide greater contrast and color fidelity. Manual focus design is benefitted by focusing and depth of field scales along with hard stops at both infinity and minimum focusing positions. The all-metal lens barrel has a frosted, anodized surface along with a rubberized focusing ring for both durability and improved tactile control.