The Milvus 15mm f/2.8 ZE from ZEISS utilizes a Distagon optical concept to control distortion and produce sharp, clean imagery with a dynamic perspective. For minimizing flare and ghosting, an enhanced ZEISS T* anti-reflective coating has been applied to benefit working in difficult lighting conditions. 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. Wide-angle prime is designed for full-frame Canon EF-mount cameras, however, can also be used with APS-C models where it will provide a 24mm equivalent focal length. Distagon optical concept affords high sharpness, well-corrected image quality from edge to edge, and very low field curvature. Two aspherical elements control distortion and spherical aberrations in order to produce greater sharpness and more accurate rendering. The floating elements system helps to maintain consistent image quality throughout the entire focusing range, from 9.8" to infinity. Weather-resistant construction includes internal seals to guard against dust and moisture as well as a blue sealing ring at the lens mount to protect the lens-camera interface.