The ZEISS Milvus ZE Super Speed 4 Lens Bundle packs four professional prime lenses along with three medium and one large gear in a Milvus super Speed transport case. These lenses work with Canon EF-mount DSLR bodies. All four lenses have a Distagon optical construction to support working with wide apertures while controlling chromatic aberrations. The maximum aperture of f/1.4 allows you to capture bright images and videos in low light. Thanks to the ZEISS T* anti-reflective coating, the overall clarity is improved with working in bright conditions. As the lenses have manual focusing mechanisms, you can refer the engraved focus and depth of field scales to get utmost accuracy. The lenses have a metal barrel with a frosted, anodized surface and rubberized focusing ring. Moreover, the weather-resistant seals at critical points keep dust and moisture at bay. A special blue seal on the mount protects your camera's electronic interface. The included Milvus super speed transport case can carry all four lenses in its dedicated custom foam inlays. Additionally, the neoprene O-ring and impact-resistant construction adds to the safety of the stored lenses. The included gears have pitch of 0.8 MOD that is a standard for all professional cine equipment. You can use the rubber-covered GumGum included in the kit to fit the gears on small diameter lenses.